138473586 has 12 divisors (see below), whose sum is σ = 300026142. Its totient is φ = 46157856.

The previous prime is 138473567. The next prime is 138473591. The reversal of 138473586 is 685374831.

It can be written as a sum of positive squares in only one way, i.e., 124746561 + 13727025 = 11169^2 + 3705^2 .

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, 3846471 + ... + 3846506.

Almost surely, 2^138473586 is an apocalyptic number.

138473586 is an abundant number, since it is smaller than the sum of its proper divisors (161552556).

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

138473586 is a wasteful number, since it uses less digits than its factorization.

138473586 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7692985 (or 7692982 counting only the distinct ones).

The product of its digits is 483840, while the sum is 45.

The square root of 138473586 is about 11767.4800191035. The cubic root of 138473586 is about 517.3553919272.

The spelling of 138473586 in words is "one hundred thirty-eight million, four hundred seventy-three thousand, five hundred eighty-six".