188012564 has 12 divisors (see below), whose sum is σ = 331934484. Its totient is φ = 93174144.

The previous prime is 188012563. The next prime is 188012579. The reversal of 188012564 is 465210881.

It can be written as a sum of positive squares in 2 ways, for example, as 40195600 + 147816964 = 6340^2 + 12158^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (188012563) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 207527 + ... + 208430.

It is an arithmetic number, because the mean of its divisors is an integer number (27661207).

Almost surely, 2^188012564 is an apocalyptic number.

It is an amenable number.

188012564 is a deficient number, since it is larger than the sum of its proper divisors (143921920).

188012564 is a wasteful number, since it uses less digits than its factorization.

188012564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 416074 (or 416072 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 35.

The square root of 188012564 is about 13711.7673550859. The cubic root of 188012564 is about 572.8781928056.

The spelling of 188012564 in words is "one hundred eighty-eight million, twelve thousand, five hundred sixty-four".