189534790856 has 16 divisors (see below), whose sum is σ = 358175984640. Its totient is φ = 94021194960.

The previous prime is 189534790843. The next prime is 189534790873. The reversal of 189534790856 is 658097435981.

It is a super-2 number, since 2×189534790856² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 189534790792 and 189534790801.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 93273980 + ... + 93276011.

It is an arithmetic number, because the mean of its divisors is an integer number (22385999040).

Almost surely, 2^189534790856 is an apocalyptic number.

It is an amenable number.

189534790856 is a deficient number, since it is larger than the sum of its proper divisors (168641193784).

189534790856 is a wasteful number, since it uses less digits than its factorization.

189534790856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 186550124 (or 186550120 counting only the distinct ones).

The product of its (nonzero) digits is 65318400, while the sum is 65.

The spelling of 189534790856 in words is "one hundred eighty-nine billion, five hundred thirty-four million, seven hundred ninety thousand, eight hundred fifty-six".