113021649 has 40 divisors (see below), whose sum is σ = 183134952. Its totient is φ = 69050880.

The previous prime is 113021617. The next prime is 113021651. The reversal of 113021649 is 946120311.

113021649 is a `hidden beast` number, since 1 + 13 + 0 + 2 + 1 + 649 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 810000 + 112211649 = 900^2 + 10593^2 .

It is not a de Polignac number, because 113021649 - 2⁵ = 113021617 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (113021659) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 190297 + ... + 190889.

Almost surely, 2^113021649 is an apocalyptic number.

It is an amenable number.

113021649 is a deficient number, since it is larger than the sum of its proper divisors (70113303).

113021649 is a wasteful number, since it uses less digits than its factorization.

113021649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 799 (or 790 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 27.

The square root of 113021649 is about 10631.1640472716. The cubic root of 113021649 is about 483.4896850755.

The spelling of 113021649 in words is "one hundred thirteen million, twenty-one thousand, six hundred forty-nine".