138936574 has 16 divisors (see below), whose sum is σ = 238435200. Its totient is φ = 59479704.

The previous prime is 138936571. The next prime is 138936587. The reversal of 138936574 is 475639831.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138936571) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9397 + ... + 19135.

It is an arithmetic number, because the mean of its divisors is an integer number (14902200).

Almost surely, 2^138936574 is an apocalyptic number.

138936574 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

138936574 is a deficient number, since it is larger than the sum of its proper divisors (99498626).

138936574 is a wasteful number, since it uses less digits than its factorization.

138936574 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10767.

The product of its digits is 544320, while the sum is 46.

The square root of 138936574 is about 11787.1359540815. The cubic root of 138936574 is about 517.9313450350.

The spelling of 138936574 in words is "one hundred thirty-eight million, nine hundred thirty-six thousand, five hundred seventy-four".