187920692 has 6 divisors (see below), whose sum is σ = 328861218. Its totient is φ = 93960344.

The previous prime is 187920683. The next prime is 187920709. The reversal of 187920692 is 296029781.

It is a happy number.

187920692 is digitally balanced in base 2, 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., 110586256 + 77334436 = 10516^2 + 8794^2 .

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, 23490083 + ... + 23490090.

It is an arithmetic number, because the mean of its divisors is an integer number (54810203).

Almost surely, 2^187920692 is an apocalyptic number.

It is an amenable number.

187920692 is a deficient number, since it is larger than the sum of its proper divisors (140940526).

187920692 is a wasteful number, since it uses less digits than its factorization.

187920692 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46980177 (or 46980175 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 44.

The square root of 187920692 is about 13708.4168305461. The cubic root of 187920692 is about 572.7848656377.

The spelling of 187920692 in words is "one hundred eighty-seven million, nine hundred twenty thousand, six hundred ninety-two".