138287013 has 8 divisors (see below), whose sum is σ = 185557728. Its totient is φ = 91603824.

The previous prime is 138286979. The next prime is 138287021. The reversal of 138287013 is 310782831.

138287013 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 138287013 - 2⁶ = 138286949 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138287033) 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, 146331 + ... + 147272.

It is an arithmetic number, because the mean of its divisors is an integer number (23194716).

Almost surely, 2^138287013 is an apocalyptic number.

It is an amenable number.

138287013 is a deficient number, since it is larger than the sum of its proper divisors (47270715).

138287013 is a wasteful number, since it uses less digits than its factorization.

138287013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 293763.

The product of its (nonzero) digits is 8064, while the sum is 33.

The square root of 138287013 is about 11759.5498638341. The cubic root of 138287013 is about 517.1229338011.

The spelling of 138287013 in words is "one hundred thirty-eight million, two hundred eighty-seven thousand, thirteen".