138158270 has 8 divisors (see below), whose sum is σ = 248684904. Its totient is φ = 55263304.

The previous prime is 138158213. The next prime is 138158297. The reversal of 138158270 is 72851831.

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

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 138158270.

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, 6907904 + ... + 6907923.

It is an arithmetic number, because the mean of its divisors is an integer number (31085613).

Almost surely, 2^138158270 is an apocalyptic number.

138158270 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

138158270 is a deficient number, since it is larger than the sum of its proper divisors (110526634).

138158270 is a wasteful number, since it uses less digits than its factorization.

138158270 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13815834.

The product of its (nonzero) digits is 13440, while the sum is 35.

The square root of 138158270 is about 11754.0746126609. The cubic root of 138158270 is about 516.9624062445.

The spelling of 138158270 in words is "one hundred thirty-eight million, one hundred fifty-eight thousand, two hundred seventy".