187919252 has 6 divisors (see below), whose sum is σ = 328858698. Its totient is φ = 93959624.

The previous prime is 187919231. The next prime is 187919261. The reversal of 187919252 is 252919781.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 181548676 + 6370576 = 13474^2 + 2524^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23489903 + ... + 23489910.

It is an arithmetic number, because the mean of its divisors is an integer number (54809783).

Almost surely, 2^187919252 is an apocalyptic number.

It is an amenable number.

187919252 is a deficient number, since it is larger than the sum of its proper divisors (140939446).

187919252 is a wasteful number, since it uses less digits than its factorization.

187919252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46979817 (or 46979815 counting only the distinct ones).

The product of its digits is 90720, while the sum is 44.

The square root of 187919252 is about 13708.3643079691. The cubic root of 187919252 is about 572.7834025873.

The spelling of 187919252 in words is "one hundred eighty-seven million, nine hundred nineteen thousand, two hundred fifty-two".