187664134 has 16 divisors (see below), whose sum is σ = 329557536. Its totient is φ = 78465600.

The previous prime is 187664123. The next prime is 187664143. The reversal of 187664134 is 431466781.

187664134 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 162897 + ... + 164044.

It is an arithmetic number, because the mean of its divisors is an integer number (20597346).

Almost surely, 2^187664134 is an apocalyptic number.

187664134 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

187664134 is a deficient number, since it is larger than the sum of its proper divisors (141893402).

187664134 is a wasteful number, since it uses less digits than its factorization.

187664134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 326991.

The product of its digits is 96768, while the sum is 40.

The square root of 187664134 is about 13699.0559528750. The cubic root of 187664134 is about 572.5240828145.

The spelling of 187664134 in words is "one hundred eighty-seven million, six hundred sixty-four thousand, one hundred thirty-four".