158633649 has 12 divisors (see below), whose sum is σ = 230405812. Its totient is φ = 105170400.

The previous prime is 158633639. The next prime is 158633653. The reversal of 158633649 is 946336851.

158633649 is a `hidden beast` number, since 1 + 5 + 8 + 633 + 6 + 4 + 9 = 666.

158633649 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 54287424 + 104346225 = 7368^2 + 10215^2 .

It is not a de Polignac number, because 158633649 - 2⁵ = 158633617 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (158633609) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 47062 + ... + 50319.

Almost surely, 2^158633649 is an apocalyptic number.

It is an amenable number.

158633649 is a deficient number, since it is larger than the sum of its proper divisors (71772163).

158633649 is a wasteful number, since it uses less digits than its factorization.

158633649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97568 (or 97565 counting only the distinct ones).

The product of its digits is 466560, while the sum is 45.

The square root of 158633649 is about 12594.9850734330. The cubic root of 158633649 is about 541.3337503721. Note that the first 3 decimals are identical.

The spelling of 158633649 in words is "one hundred fifty-eight million, six hundred thirty-three thousand, six hundred forty-nine".