138801156 has 48 divisors (see below), whose sum is σ = 367147200. Its totient is φ = 40459392.

The previous prime is 138801151. The next prime is 138801191. The reversal of 138801156 is 651108831.

It is not an unprimeable number, because it can be changed into a prime (138801151) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20451 + ... + 26378.

It is an arithmetic number, because the mean of its divisors is an integer number (7648900).

Almost surely, 2^138801156 is an apocalyptic number.

It is an amenable number.

138801156 is an abundant number, since it is smaller than the sum of its proper divisors (228346044).

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

138801156 is a wasteful number, since it uses less digits than its factorization.

138801156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46868 (or 46866 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 33.

The square root of 138801156 is about 11781.3902405446. The cubic root of 138801156 is about 517.7630187640.

Adding to 138801156 its reverse (651108831), we get a palindrome (789909987).

The spelling of 138801156 in words is "one hundred thirty-eight million, eight hundred one thousand, one hundred fifty-six".