158949855 has 12 divisors (see below), whose sum is σ = 275513160. Its totient is φ = 84773232.

The previous prime is 158949853. The next prime is 158949883. The reversal of 158949855 is 558949851.

158949855 is a `hidden beast` number, since 1 + 589 + 4 + 9 + 8 + 55 = 666.

It is not a de Polignac number, because 158949855 - 2¹ = 158949853 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (158949853) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1766065 + ... + 1766154.

It is an arithmetic number, because the mean of its divisors is an integer number (22959430).

Almost surely, 2^158949855 is an apocalyptic number.

158949855 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

158949855 is a deficient number, since it is larger than the sum of its proper divisors (116563305).

158949855 is a wasteful number, since it uses less digits than its factorization.

158949855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3532230 (or 3532227 counting only the distinct ones).

The product of its digits is 2592000, while the sum is 54.

The square root of 158949855 is about 12607.5316775331. The cubic root of 158949855 is about 541.6931935990.

The spelling of 158949855 in words is "one hundred fifty-eight million, nine hundred forty-nine thousand, eight hundred fifty-five".