138746186 has 16 divisors (see below), whose sum is σ = 210319200. Its totient is φ = 68643408.

The previous prime is 138746171. The next prime is 138746207. The reversal of 138746186 is 681647831.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 107501 + ... + 108783.

It is an arithmetic number, because the mean of its divisors is an integer number (13144950).

Almost surely, 2^138746186 is an apocalyptic number.

138746186 is a deficient number, since it is larger than the sum of its proper divisors (71573014).

138746186 is a wasteful number, since it uses less digits than its factorization.

138746186 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1813.

The product of its digits is 193536, while the sum is 44.

The square root of 138746186 is about 11779.0570929935. The cubic root of 138746186 is about 517.6946591239.

The spelling of 138746186 in words is "one hundred thirty-eight million, seven hundred forty-six thousand, one hundred eighty-six".