158936449 has 9 divisors (see below), whose sum is σ = 184987971. Its totient is φ = 136155600.

The previous prime is 158936441. The next prime is 158936489. The reversal of 158936449 is 944639851.

It is a happy number.

The square root of 158936449 is 12607.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 20638849 + 138297600 = 4543^2 + 11760^2 .

It is not a de Polignac number, because 158936449 - 2³ = 158936441 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (49).

It is not an unprimeable number, because it can be changed into a prime (158936441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 87349 + ... + 89149.

It is an arithmetic number, because the mean of its divisors is an integer number (20554219).

Almost surely, 2^158936449 is an apocalyptic number.

158936449 is the 12607-th square number.

158936449 is the 6304-th centered octagonal number.

It is an amenable number.

158936449 is a deficient number, since it is larger than the sum of its proper divisors (26051522).

158936449 is an frugal number, since it uses more digits than its factorization.

158936449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3616 (or 1808 counting only the distinct ones).

The product of its digits is 933120, while the sum is 49.

The cubic root of 158936449 is about 541.6779641773.

Multiplying 158936449 by its sum of digits (49), we get a square (7787886001 = 88249²).

158936449 divided by its sum of digits (49) gives a square (3243601 = 1801²).

The spelling of 158936449 in words is "one hundred fifty-eight million, nine hundred thirty-six thousand, four hundred forty-nine".