187064164 has 18 divisors (see below), whose sum is σ = 380809590. Its totient is φ = 80170272.

The previous prime is 187064153. The next prime is 187064203. The reversal of 187064164 is 461460781.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 175774564 + 11289600 = 13258^2 + 3360^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 477009 + ... + 477400.

Almost surely, 2^187064164 is an apocalyptic number.

187064164 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

187064164 is an abundant number, since it is smaller than the sum of its proper divisors (193745426).

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

187064164 is a wasteful number, since it uses less digits than its factorization.

187064164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 954427 (or 954418 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 37.

The square root of 187064164 is about 13677.1401981555. The cubic root of 187064164 is about 571.9133037300.

The spelling of 187064164 in words is "one hundred eighty-seven million, sixty-four thousand, one hundred sixty-four".