138774370 has 32 divisors (see below), whose sum is σ = 291312000. Its totient is φ = 47578608.

The previous prime is 138774343. The next prime is 138774401. The reversal of 138774370 is 73477831.

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, 16800 + ... + 23659.

It is an arithmetic number, because the mean of its divisors is an integer number (9103500).

Almost surely, 2^138774370 is an apocalyptic number.

138774370 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

138774370 is an abundant number, since it is smaller than the sum of its proper divisors (152537630).

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

138774370 is an equidigital number, since it uses as much as digits as its factorization.

138774370 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40487 (or 40473 counting only the distinct ones).

The product of its (nonzero) digits is 98784, while the sum is 40.

The square root of 138774370 is about 11780.2533928604. The cubic root of 138774370 is about 517.7297104620.

It can be divided in two parts, 1387 and 74370, that added together give a palindrome (75757).

The spelling of 138774370 in words is "one hundred thirty-eight million, seven hundred seventy-four thousand, three hundred seventy".