158449291 has 24 divisors (see below), whose sum is σ = 216551664. Its totient is φ = 113964480.

The previous prime is 158449289. The next prime is 158449307. The reversal of 158449291 is 192944851.

It is not a de Polignac number, because 158449291 - 2¹ = 158449289 is a prime.

It is not an unprimeable number, because it can be changed into a prime (158449211) 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, 4300 + ... + 18313.

It is an arithmetic number, because the mean of its divisors is an integer number (9022986).

Almost surely, 2^158449291 is an apocalyptic number.

158449291 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

158449291 is a deficient number, since it is larger than the sum of its proper divisors (58102373).

158449291 is a wasteful number, since it uses less digits than its factorization.

158449291 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22651 (or 22644 counting only the distinct ones).

The product of its digits is 103680, while the sum is 43.

The square root of 158449291 is about 12587.6642392463. The cubic root of 158449291 is about 541.1239632428.

The spelling of 158449291 in words is "one hundred fifty-eight million, four hundred forty-nine thousand, two hundred ninety-one".