187731423016 has 8 divisors (see below), whose sum is σ = 351996418170. Its totient is φ = 93865711504.

The previous prime is 187731423001. The next prime is 187731423029. The reversal of 187731423016 is 610324137781.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 177215740900 + 10515682116 = 420970^2 + 102546^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×187731423016² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11733213931 + ... + 11733213946.

Almost surely, 2^187731423016 is an apocalyptic number.

It is an amenable number.

187731423016 is a deficient number, since it is larger than the sum of its proper divisors (164264995154).

187731423016 is a wasteful number, since it uses less digits than its factorization.

187731423016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23466427883 (or 23466427879 counting only the distinct ones).

The product of its (nonzero) digits is 169344, while the sum is 43.

The spelling of 187731423016 in words is "one hundred eighty-seven billion, seven hundred thirty-one million, four hundred twenty-three thousand, sixteen".