189546564252 has 12 divisors (see below), whose sum is σ = 442275316616. Its totient is φ = 63182188080.

The previous prime is 189546564217. The next prime is 189546564271. The reversal of 189546564252 is 252465645981.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 189546564192 and 189546564201.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7897773499 + ... + 7897773522.

Almost surely, 2^189546564252 is an apocalyptic number.

189546564252 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

189546564252 is an abundant number, since it is smaller than the sum of its proper divisors (252728752364).

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

189546564252 is a wasteful number, since it uses less digits than its factorization.

189546564252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15795547028 (or 15795547026 counting only the distinct ones).

The product of its digits is 20736000, while the sum is 57.

The spelling of 189546564252 in words is "one hundred eighty-nine billion, five hundred forty-six million, five hundred sixty-four thousand, two hundred fifty-two".