187748864 has 20 divisors (see below), whose sum is σ = 375132054. Its totient is φ = 93874176.

The previous prime is 187748863. The next prime is 187748887. The reversal of 187748864 is 468847781.

187748864 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 170041600 + 17707264 = 13040^2 + 4208^2 .

It is not an unprimeable number, because it can be changed into a prime (187748863) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 182837 + ... + 183860.

Almost surely, 2^187748864 is an apocalyptic number.

It is an amenable number.

187748864 is a deficient number, since it is larger than the sum of its proper divisors (187383190).

187748864 is an frugal number, since it uses more digits than its factorization.

187748864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 366715 (or 366699 counting only the distinct ones).

The product of its digits is 2408448, while the sum is 53.

The square root of 187748864 is about 13702.1481527533. The cubic root of 187748864 is about 572.6102343619.

The spelling of 187748864 in words is "one hundred eighty-seven million, seven hundred forty-eight thousand, eight hundred sixty-four".