9138186472 has 16 divisors (see below), whose sum is σ = 17135741700. Its totient is φ = 4568655360.

The previous prime is 9138186469. The next prime is 9138186487. The reversal of 9138186472 is 2746818319.

It can be written as a sum of positive squares in 2 ways, for example, as 9136683396 + 1503076 = 95586^2 + 1226^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 44554 + ... + 142342.

Almost surely, 2^9138186472 is an apocalyptic number.

It is an amenable number.

9138186472 is a deficient number, since it is larger than the sum of its proper divisors (7997555228).

9138186472 is a wasteful number, since it uses less digits than its factorization.

9138186472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109476 (or 109472 counting only the distinct ones).

The product of its digits is 580608, while the sum is 49.

The square root of 9138186472 is about 95593.8621042167. The cubic root of 9138186472 is about 2090.6757025536.

The spelling of 9138186472 in words is "nine billion, one hundred thirty-eight million, one hundred eighty-six thousand, four hundred seventy-two".