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18019164960 = 25335171092251
BaseRepresentation
bin10000110010000001…
…101010001100100000
31201111210020102102000
4100302001222030200
5243400401234320
612140005124000
71205350242426
oct206201521440
951453212360
1018019164960
117707392375
1235aa6b9600
1319121b08b4
14c2d1b9116
15706de1c90
hex43206a320

18019164960 has 384 divisors, whose sum is σ = 67419475200. Its totient is φ = 4478976000.

The previous prime is 18019164937. The next prime is 18019165013. The reversal of 18019164960 is 6946191081.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 8003835 + ... + 8006085.

It is an arithmetic number, because the mean of its divisors is an integer number (175571550).

Almost surely, 218019164960 is an apocalyptic number.

18019164960 is a gapful number since it is divisible by the number (10) 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 18019164960, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33709737600).

18019164960 is an abundant number, since it is smaller than the sum of its proper divisors (49400310240).

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

18019164960 is a wasteful number, since it uses less digits than its factorization.

18019164960 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2401 (or 2387 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 45.

The spelling of 18019164960 in words is "eighteen billion, nineteen million, one hundred sixty-four thousand, nine hundred sixty".