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18310675968 = 29351311321
BaseRepresentation
bin10001000011011001…
…101011111000000000
31202021002202201100000
4101003121223320000
5300000013112333
612224541200000
71215520114644
oct210331537000
952232681300
1018310675968
117846998962
123670260000
13195a6c8810
14c59bbcc24
157227c5713
hex44366be00

18310675968 has 240 divisors, whose sum is σ = 59023940976. Its totient is φ = 5633556480.

The previous prime is 18310675967. The next prime is 18310675969. The reversal of 18310675968 is 86957601381.

18310675968 is a `hidden beast` number, since 18 + 31 + 0 + 6 + 7 + 596 + 8 = 666.

It is an interprime number because it is at equal distance from previous prime (18310675967) and next prime (18310675969).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18310675963) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1611748 + ... + 1623068.

Almost surely, 218310675968 is an apocalyptic number.

18310675968 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18310675968, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29511970488).

18310675968 is an abundant number, since it is smaller than the sum of its proper divisors (40713265008).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18310675968 is an equidigital number, since it uses as much as digits as its factorization.

18310675968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11367 (or 11339 counting only the distinct ones).

The product of its (nonzero) digits is 2177280, while the sum is 54.

The spelling of 18310675968 in words is "eighteen billion, three hundred ten million, six hundred seventy-five thousand, nine hundred sixty-eight".