138118596 has 144 divisors (see below), whose sum is σ = 411844608. Its totient is φ = 35259840.

The previous prime is 138118577. The next prime is 138118597. The reversal of 138118596 is 695811831.

It is a super-2 number, since 2×138118596² = 38153493122022432, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42).

Its product of digits (51840) is a multiple of the sum of its prime factors (270).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138118597) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1087485 + ... + 1087611.

It is an arithmetic number, because the mean of its divisors is an integer number (2860032).

Almost surely, 2^138118596 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 138118596, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (205922304).

138118596 is an abundant number, since it is smaller than the sum of its proper divisors (273726012).

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

138118596 is a wasteful number, since it uses less digits than its factorization.

138118596 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 270 (or 257 counting only the distinct ones).

The product of its digits is 51840, while the sum is 42.

The square root of 138118596 is about 11752.3868214078. The cubic root of 138118596 is about 516.9129172778.

The spelling of 138118596 in words is "one hundred thirty-eight million, one hundred eighteen thousand, five hundred ninety-six".