113138849 has 2 divisors, whose sum is σ = 113138850. Its totient is φ = 113138848.

The previous prime is 113138821. The next prime is 113138867. The reversal of 113138849 is 948831311.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 103897249 + 9241600 = 10193^2 + 3040^2 .

It is an emirp because it is prime and its reverse (948831311) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 113138849 - 2²⁰ = 112090273 is a prime.

It is not a weakly prime, because it can be changed into another prime (113138819) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 56569424 + 56569425.

It is an arithmetic number, because the mean of its divisors is an integer number (56569425).

Almost surely, 2^113138849 is an apocalyptic number.

It is an amenable number.

113138849 is a deficient number, since it is larger than the sum of its proper divisors (1).

113138849 is an equidigital number, since it uses as much as digits as its factorization.

113138849 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 20736, while the sum is 38.

The square root of 113138849 is about 10636.6747153422. The cubic root of 113138849 is about 483.6567486904.

The spelling of 113138849 in words is "one hundred thirteen million, one hundred thirty-eight thousand, eight hundred forty-nine".