138155324 has 12 divisors (see below), whose sum is σ = 241854984. Its totient is φ = 69053904.

The previous prime is 138155317. The next prime is 138155341. The reversal of 138155324 is 423551831.

138155324 is digitally balanced in base 3 and base 9, because in such bases it contains all the possibile digits an equal number of times.

138155324 is strictly pandigital in base 9.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16907 + ... + 23709.

It is an arithmetic number, because the mean of its divisors is an integer number (20154582).

Almost surely, 2^138155324 is an apocalyptic number.

It is an amenable number.

138155324 is a deficient number, since it is larger than the sum of its proper divisors (103699660).

138155324 is a wasteful number, since it uses less digits than its factorization.

138155324 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11884 (or 11882 counting only the distinct ones).

The product of its digits is 14400, while the sum is 32.

The square root of 138155324 is about 11753.9492937480. The cubic root of 138155324 is about 516.9587317580.

The spelling of 138155324 in words is "one hundred thirty-eight million, one hundred fifty-five thousand, three hundred twenty-four".