187939164 has 96 divisors (see below), whose sum is σ = 529320960. Its totient is φ = 50738688.

The previous prime is 187939159. The next prime is 187939207. The reversal of 187939164 is 461939781.

It is a happy number.

187939164 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×187939164² = 70642258730037792, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 171402 + ... + 172494.

It is an arithmetic number, because the mean of its divisors is an integer number (5513760).

Almost surely, 2^187939164 is an apocalyptic number.

187939164 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 187939164, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (264660480).

187939164 is an abundant number, since it is smaller than the sum of its proper divisors (341381796).

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

187939164 is a wasteful number, since it uses less digits than its factorization.

187939164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1219 (or 1217 counting only the distinct ones).

The product of its digits is 326592, while the sum is 48.

The square root of 187939164 is about 13709.0905606462. The cubic root of 187939164 is about 572.8036326598.

The spelling of 187939164 in words is "one hundred eighty-seven million, nine hundred thirty-nine thousand, one hundred sixty-four".