187265638564 has 9 divisors (see below), whose sum is σ = 327716382091. Its totient is φ = 93632386540.

The previous prime is 187265638523. The next prime is 187265638627. The reversal of 187265638564 is 465836562781.

It is a happy number.

The square root of 187265638564 is 432742.

It is a perfect power (a square), and thus also a powerful number.

187265638564 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 757299 + ... + 973669.

Almost surely, 2^187265638564 is an apocalyptic number.

187265638564 is the 432742-nd square number.

It is an amenable number.

187265638564 is a deficient number, since it is larger than the sum of its proper divisors (140450743527).

187265638564 is an frugal number, since it uses more digits than its factorization.

187265638564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 432746 (or 216373 counting only the distinct ones).

The product of its digits is 58060800, while the sum is 61.

The spelling of 187265638564 in words is "one hundred eighty-seven billion, two hundred sixty-five million, six hundred thirty-eight thousand, five hundred sixty-four".