189555953960 has 32 divisors (see below), whose sum is σ = 426527285760. Its totient is φ = 75817690176.

The previous prime is 189555953903. The next prime is 189555953963. The reversal of 189555953960 is 69359555981.

It is not an unprimeable number, because it can be changed into a prime (189555953963) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 548657 + ... + 824703.

It is an arithmetic number, because the mean of its divisors is an integer number (13328977680).

Almost surely, 2^189555953960 is an apocalyptic number.

189555953960 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

189555953960 is an abundant number, since it is smaller than the sum of its proper divisors (236971331800).

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

189555953960 is a wasteful number, since it uses less digits than its factorization.

189555953960 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 293225 (or 293221 counting only the distinct ones).

The product of its (nonzero) digits is 65610000, while the sum is 65.

The spelling of 189555953960 in words is "one hundred eighty-nine billion, five hundred fifty-five million, nine hundred fifty-three thousand, nine hundred sixty".