138586364 has 24 divisors (see below), whose sum is σ = 279631968. Its totient is φ = 58867200.

The previous prime is 138586319. The next prime is 138586369. The reversal of 138586364 is 463685831.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138586369) 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, 18737 + ... + 25064.

It is an arithmetic number, because the mean of its divisors is an integer number (11651332).

Almost surely, 2^138586364 is an apocalyptic number.

138586364 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

138586364 is an abundant number, since it is smaller than the sum of its proper divisors (141045604).

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

138586364 is a wasteful number, since it uses less digits than its factorization.

138586364 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43925 (or 43923 counting only the distinct ones).

The product of its digits is 414720, while the sum is 44.

The square root of 138586364 is about 11772.2709788723. The cubic root of 138586364 is about 517.4958049245.

The spelling of 138586364 in words is "one hundred thirty-eight million, five hundred eighty-six thousand, three hundred sixty-four".