30861139194 has 12 divisors (see below), whose sum is σ = 66865801626. Its totient is φ = 10287046392.

The previous prime is 30861139187. The next prime is 30861139237. The reversal of 30861139194 is 49193116803.

It can be written as a sum of positive squares in only one way, i.e., 27146846169 + 3714293025 = 164763^2 + 60945^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 857253849 + ... + 857253884.

Almost surely, 2^30861139194 is an apocalyptic number.

30861139194 is an abundant number, since it is smaller than the sum of its proper divisors (36004662432).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

30861139194 is a wasteful number, since it uses less digits than its factorization.

30861139194 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1714507741 (or 1714507738 counting only the distinct ones).

The product of its (nonzero) digits is 139968, while the sum is 45.

The spelling of 30861139194 in words is "thirty billion, eight hundred sixty-one million, one hundred thirty-nine thousand, one hundred ninety-four".