138763015 has 8 divisors (see below), whose sum is σ = 168387120. Its totient is φ = 109762752.

The previous prime is 138763007. The next prime is 138763033. The reversal of 138763015 is 510367831.

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

It is a cyclic number.

It is not a de Polignac number, because 138763015 - 2³ = 138763007 is a prime.

It is a congruent number.

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, 155469 + ... + 156358.

It is an arithmetic number, because the mean of its divisors is an integer number (21048390).

Almost surely, 2^138763015 is an apocalyptic number.

138763015 is a deficient number, since it is larger than the sum of its proper divisors (29624105).

138763015 is an equidigital number, since it uses as much as digits as its factorization.

138763015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 311921.

The product of its (nonzero) digits is 15120, while the sum is 34.

The square root of 138763015 is about 11779.7714324175. The cubic root of 138763015 is about 517.7155892637.

The spelling of 138763015 in words is "one hundred thirty-eight million, seven hundred sixty-three thousand, fifteen".