138264364 has 24 divisors (see below), whose sum is σ = 277528608. Its totient is φ = 59041920.

The previous prime is 138264337. The next prime is 138264391. The reversal of 138264364 is 463462831.

It is an interprime number because it is at equal distance from previous prime (138264337) and next prime (138264391).

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, 919 + ... + 16654.

It is an arithmetic number, because the mean of its divisors is an integer number (11563692).

Almost surely, 2^138264364 is an apocalyptic number.

138264364 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

138264364 is an abundant number, since it is smaller than the sum of its proper divisors (139264244).

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

138264364 is a wasteful number, since it uses less digits than its factorization.

138264364 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17865 (or 17863 counting only the distinct ones).

The product of its digits is 82944, while the sum is 37.

The square root of 138264364 is about 11758.5868198521. The cubic root of 138264364 is about 517.0947003550.

The spelling of 138264364 in words is "one hundred thirty-eight million, two hundred sixty-four thousand, three hundred sixty-four".