187893047572 has 12 divisors (see below), whose sum is σ = 333317119156. Its totient is φ = 92659584960.

The previous prime is 187893047549. The next prime is 187893047627. The reversal of 187893047572 is 275740398781.

187893047572 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 2 ways, for example, as 60105386896 + 127787660676 = 245164^2 + 357474^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 187893047572.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 321734379 + ... + 321734962.

Almost surely, 2^187893047572 is an apocalyptic number.

It is an amenable number.

187893047572 is a deficient number, since it is larger than the sum of its proper divisors (145424071584).

187893047572 is a wasteful number, since it uses less digits than its factorization.

187893047572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 643469418 (or 643469416 counting only the distinct ones).

The product of its (nonzero) digits is 23708160, while the sum is 61.

The spelling of 187893047572 in words is "one hundred eighty-seven billion, eight hundred ninety-three million, forty-seven thousand, five hundred seventy-two".