138951324 has 18 divisors (see below), whose sum is σ = 351238160. Its totient is φ = 46317096.

The previous prime is 138951301. The next prime is 138951343. The reversal of 138951324 is 423159831.

138951324 is a `hidden beast` number, since 138 + 9 + 513 + 2 + 4 = 666.

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 3859759 = 138951324 / (1 + 3 + 8 + 9 + 5 + 1 + 3 + 2 + 4).

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 5 ways as a sum of consecutive naturals, for example, 1929844 + ... + 1929915.

Almost surely, 2^138951324 is an apocalyptic number.

It is an amenable number.

138951324 is an abundant number, since it is smaller than the sum of its proper divisors (212286836).

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

138951324 is a wasteful number, since it uses less digits than its factorization.

138951324 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3859769 (or 3859764 counting only the distinct ones).

The product of its digits is 25920, while the sum is 36.

The square root of 138951324 is about 11787.7616195782. The cubic root of 138951324 is about 517.9496728633.

The spelling of 138951324 in words is "one hundred thirty-eight million, nine hundred fifty-one thousand, three hundred twenty-four".