138261160 has 32 divisors (see below), whose sum is σ = 312478560. Its totient is φ = 55057216.

The previous prime is 138261127. The next prime is 138261161. The reversal of 138261160 is 61162831.

It is a super-2 number, since 2×138261160² = 38232296729091200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (138261161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1467 + ... + 16693.

It is an arithmetic number, because the mean of its divisors is an integer number (9764955).

Almost surely, 2^138261160 is an apocalyptic number.

138261160 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

138261160 is an abundant number, since it is smaller than the sum of its proper divisors (174217400).

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

138261160 is a wasteful number, since it uses less digits than its factorization.

138261160 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15465 (or 15461 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 28.

The square root of 138261160 is about 11758.4505782012. The cubic root of 138261160 is about 517.0907061124.

The spelling of 138261160 in words is "one hundred thirty-eight million, two hundred sixty-one thousand, one hundred sixty".