158249091 has 32 divisors (see below), whose sum is σ = 283304448. Its totient is φ = 75882240.

The previous prime is 158249071. The next prime is 158249093. The reversal of 158249091 is 190942851.

It is not a de Polignac number, because 158249091 - 2⁵ = 158249059 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is not an unprimeable number, because it can be changed into a prime (158249093) 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 31 ways as a sum of consecutive naturals, for example, 23346 + ... + 29351.

It is an arithmetic number, because the mean of its divisors is an integer number (8853264).

Almost surely, 2^158249091 is an apocalyptic number.

158249091 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

158249091 is a deficient number, since it is larger than the sum of its proper divisors (125055357).

158249091 is a wasteful number, since it uses less digits than its factorization.

158249091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52731.

The product of its (nonzero) digits is 25920, while the sum is 39.

The square root of 158249091 is about 12579.7094958508. The cubic root of 158249091 is about 540.8959645881.

The spelling of 158249091 in words is "one hundred fifty-eight million, two hundred forty-nine thousand, ninety-one".