158984091 has 12 divisors (see below), whose sum is σ = 262450032. Its totient is φ = 90848016.

The previous prime is 158984083. The next prime is 158984149. The reversal of 158984091 is 190489851.

158984091 is a `hidden beast` number, since 158 + 98 + 409 + 1 = 666.

It is not a de Polignac number, because 158984091 - 2³ = 158984083 is a prime.

It is not an unprimeable number, because it can be changed into a prime (158984071) 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, 1261716 + ... + 1261841.

It is an arithmetic number, because the mean of its divisors is an integer number (21870836).

Almost surely, 2^158984091 is an apocalyptic number.

158984091 is a deficient number, since it is larger than the sum of its proper divisors (103465941).

158984091 is a wasteful number, since it uses less digits than its factorization.

158984091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2523570 (or 2523567 counting only the distinct ones).

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

The square root of 158984091 is about 12608.8893642541. The cubic root of 158984091 is about 541.7320823350.

The spelling of 158984091 in words is "one hundred fifty-eight million, nine hundred eighty-four thousand, ninety-one".