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18677331086 = 210837861739
BaseRepresentation
bin10001011001010000…
…010111010010001110
31210012122200201121012
4101121100113102032
5301222344043321
612325200005222
71230561460211
oct213120272216
953178621535
1018677331086
117a14959317
123753000812
1319b86637cb
14c92783778
15744a9e05b
hex45941748e

18677331086 has 8 divisors (see below), whose sum is σ = 28018614360. Its totient is φ = 9337792968.

The previous prime is 18677331067. The next prime is 18677331089. The reversal of 18677331086 is 68013377681.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18677331089) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 409196 + ... + 452543.

It is an arithmetic number, because the mean of its divisors is an integer number (3502326795).

Almost surely, 218677331086 is an apocalyptic number.

18677331086 is a deficient number, since it is larger than the sum of its proper divisors (9341283274).

18677331086 is a wasteful number, since it uses less digits than its factorization.

18677331086 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 872578.

The product of its (nonzero) digits is 1016064, while the sum is 50.

The spelling of 18677331086 in words is "eighteen billion, six hundred seventy-seven million, three hundred thirty-one thousand, eighty-six".

Divisors: 1 2 10837 21674 861739 1723478 9338665543 18677331086