138789574 has 32 divisors (see below), whose sum is σ = 260464896. Its totient is φ = 53884320.

The previous prime is 138789569. The next prime is 138789583. The reversal of 138789574 is 475987831.

It is a super-2 number, since 2×138789574² = 38525091702202952, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 47397 + ... + 50239.

It is an arithmetic number, because the mean of its divisors is an integer number (8139528).

Almost surely, 2^138789574 is an apocalyptic number.

138789574 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

138789574 is a deficient number, since it is larger than the sum of its proper divisors (121675322).

138789574 is a wasteful number, since it uses less digits than its factorization.

138789574 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3180.

The product of its digits is 1693440, while the sum is 52.

The square root of 138789574 is about 11780.8986923749. The cubic root of 138789574 is about 517.7486171114.

The spelling of 138789574 in words is "one hundred thirty-eight million, seven hundred eighty-nine thousand, five hundred seventy-four".