187138912 has 24 divisors (see below), whose sum is σ = 369986400. Its totient is φ = 93174144.

The previous prime is 187138891. The next prime is 187138937. The reversal of 187138912 is 219831781.

It is a zygodrome in base 15.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4587 + ... + 19882.

It is an arithmetic number, because the mean of its divisors is an integer number (15416100).

Almost surely, 2^187138912 is an apocalyptic number.

It is an amenable number.

187138912 is a deficient number, since it is larger than the sum of its proper divisors (182847488).

187138912 is a wasteful number, since it uses less digits than its factorization.

187138912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24718 (or 24710 counting only the distinct ones).

The product of its digits is 24192, while the sum is 40.

The square root of 187138912 is about 13679.8725140259. The cubic root of 187138912 is about 571.9894695439.

The spelling of 187138912 in words is "one hundred eighty-seven million, one hundred thirty-eight thousand, nine hundred twelve".