30387139592 has 8 divisors (see below), whose sum is σ = 56975886750. Its totient is φ = 15193569792.

The previous prime is 30387139561. The next prime is 30387139639. The reversal of 30387139592 is 29593178303.

It can be written as a sum of positive squares in only one way, i.e., 24981066916 + 5406072676 = 158054^2 + 73526^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 30387139592.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1899196217 + ... + 1899196232.

Almost surely, 2^30387139592 is an apocalyptic number.

It is an amenable number.

30387139592 is a deficient number, since it is larger than the sum of its proper divisors (26588747158).

30387139592 is a wasteful number, since it uses less digits than its factorization.

30387139592 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3798392455 (or 3798392451 counting only the distinct ones).

The product of its (nonzero) digits is 1224720, while the sum is 50.

The spelling of 30387139592 in words is "thirty billion, three hundred eighty-seven million, one hundred thirty-nine thousand, five hundred ninety-two".