138550113 has 24 divisors (see below), whose sum is σ = 219186240. Its totient is φ = 83812320.

The previous prime is 138550103. The next prime is 138550133. The reversal of 138550113 is 311055831.

It is not a de Polignac number, because 138550113 - 2⁸ = 138549857 is a prime.

It is a super-2 number, since 2×138550113² = 38392267624625538, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (138550103) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3133 + ... + 16938.

It is an arithmetic number, because the mean of its divisors is an integer number (9132760).

Almost surely, 2^138550113 is an apocalyptic number.

138550113 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

138550113 is a deficient number, since it is larger than the sum of its proper divisors (80636127).

138550113 is a wasteful number, since it uses less digits than its factorization.

138550113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20149 (or 20146 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 27.

The square root of 138550113 is about 11770.7312007369. The cubic root of 138550113 is about 517.4506793296.

The spelling of 138550113 in words is "one hundred thirty-eight million, five hundred fifty thousand, one hundred thirteen".