189009926460 has 72 divisors (see below), whose sum is σ = 573418219920. Its totient is φ = 50394901248.

The previous prime is 189009926453. The next prime is 189009926509. The reversal of 189009926460 is 64629900981.

189009926460 is a `hidden beast` number, since 1 + 8 + 90 + 0 + 9 + 92 + 6 + 460 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 189009926397 and 189009926406.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1145451 + ... + 1300029.

Almost surely, 2^189009926460 is an apocalyptic number.

189009926460 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

189009926460 is an abundant number, since it is smaller than the sum of its proper divisors (384408293460).

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

189009926460 is a wasteful number, since it uses less digits than its factorization.

189009926460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161387 (or 161382 counting only the distinct ones).

The product of its (nonzero) digits is 1679616, while the sum is 54.

The spelling of 189009926460 in words is "one hundred eighty-nine billion, nine million, nine hundred twenty-six thousand, four hundred sixty".