158089491 has 48 divisors (see below), whose sum is σ = 274014208. Its totient is φ = 85924800.

The previous prime is 158089489. The next prime is 158089499. The reversal of 158089491 is 194980851.

158089491 is a `hidden beast` number, since 1 + 5 + 80 + 89 + 491 = 666.

It is not a de Polignac number, because 158089491 - 2¹ = 158089489 is a prime.

It is not an unprimeable number, because it can be changed into a prime (158089499) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 118470 + ... + 119796.

Almost surely, 2^158089491 is an apocalyptic number.

158089491 is a deficient number, since it is larger than the sum of its proper divisors (115924717).

158089491 is a wasteful number, since it uses less digits than its factorization.

158089491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1432 (or 1429 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 45.

The square root of 158089491 is about 12573.3643469041. The cubic root of 158089491 is about 540.7140656316.

The spelling of 158089491 in words is "one hundred fifty-eight million, eighty-nine thousand, four hundred ninety-one".