158879515 has 16 divisors (see below), whose sum is σ = 199983168. Its totient is φ = 120942976.

The previous prime is 158879489. The next prime is 158879519. The reversal of 158879515 is 515978851.

It is a cyclic number.

It is not a de Polignac number, because 158879515 - 2¹⁵ = 158846747 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (158879519) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19149 + ... + 26161.

It is an arithmetic number, because the mean of its divisors is an integer number (12498948).

Almost surely, 2^158879515 is an apocalyptic number.

158879515 is a deficient number, since it is larger than the sum of its proper divisors (41103653).

158879515 is a wasteful number, since it uses less digits than its factorization.

158879515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7238.

The product of its digits is 504000, while the sum is 49.

The square root of 158879515 is about 12604.7417664941. The cubic root of 158879515 is about 541.6132767364.

The spelling of 158879515 in words is "one hundred fifty-eight million, eight hundred seventy-nine thousand, five hundred fifteen".