138623116 has 24 divisors (see below), whose sum is σ = 258531840. Its totient is φ = 64885392.

The previous prime is 138623071. The next prime is 138623119. The reversal of 138623116 is 611326831.

It is not an unprimeable number, because it can be changed into a prime (138623119) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11706 + ... + 20353.

It is an arithmetic number, because the mean of its divisors is an integer number (10772160).

Almost surely, 2^138623116 is an apocalyptic number.

It is an amenable number.

138623116 is a deficient number, since it is larger than the sum of its proper divisors (119908724).

138623116 is a wasteful number, since it uses less digits than its factorization.

138623116 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32133 (or 32131 counting only the distinct ones).

The product of its digits is 5184, while the sum is 31.

The square root of 138623116 is about 11773.8318316511. The cubic root of 138623116 is about 517.5415461367.

Adding to 138623116 its reverse (611326831), we get a palindrome (749949947).

The spelling of 138623116 in words is "one hundred thirty-eight million, six hundred twenty-three thousand, one hundred sixteen".