189896396256 has 72 divisors (see below), whose sum is σ = 617163294384. Its totient is φ = 54256112640.

The previous prime is 189896396201. The next prime is 189896396273. The reversal of 189896396256 is 652693698981.

189896396256 is a `hidden beast` number, since 18 + 98 + 96 + 396 + 2 + 56 = 666.

It is a tau number, because it is divible by the number of its divisors (72).

It is a super-2 number, since 2×189896396256² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 47095305 + ... + 47099336.

It is an arithmetic number, because the mean of its divisors is an integer number (8571712422).

Almost surely, 2^189896396256 is an apocalyptic number.

189896396256 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

189896396256 is an abundant number, since it is smaller than the sum of its proper divisors (427266898128).

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

189896396256 is a wasteful number, since it uses less digits than its factorization.

189896396256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94194664 (or 94194653 counting only the distinct ones).

The product of its digits is 302330880, while the sum is 72.

The spelling of 189896396256 in words is "one hundred eighty-nine billion, eight hundred ninety-six million, three hundred ninety-six thousand, two hundred fifty-six".