138081560 has 16 divisors (see below), whose sum is σ = 310683600. Its totient is φ = 55232608.

The previous prime is 138081551. The next prime is 138081583. The reversal of 138081560 is 65180831.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 1725980 + ... + 1726059.

It is an arithmetic number, because the mean of its divisors is an integer number (19417725).

Almost surely, 2^138081560 is an apocalyptic number.

138081560 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

138081560 is an abundant number, since it is smaller than the sum of its proper divisors (172602040).

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

138081560 is a wasteful number, since it uses less digits than its factorization.

138081560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3452050 (or 3452046 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 32.

The square root of 138081560 is about 11750.8110358392. The cubic root of 138081560 is about 516.8667103736.

The spelling of 138081560 in words is "one hundred thirty-eight million, eighty-one thousand, five hundred sixty".