158920915 has 8 divisors (see below), whose sum is σ = 198996768. Its totient is φ = 121608960.

The previous prime is 158920897. The next prime is 158920963. The reversal of 158920915 is 519029851.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 158920915 - 2¹¹ = 158918867 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 690846 + ... + 691075.

It is an arithmetic number, because the mean of its divisors is an integer number (24874596).

Almost surely, 2^158920915 is an apocalyptic number.

158920915 is a deficient number, since it is larger than the sum of its proper divisors (40075853).

158920915 is a wasteful number, since it uses less digits than its factorization.

158920915 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1381949.

The product of its (nonzero) digits is 32400, while the sum is 40.

The square root of 158920915 is about 12606.3838986444. The cubic root of 158920915 is about 541.6603162438.

The spelling of 158920915 in words is "one hundred fifty-eight million, nine hundred twenty thousand, nine hundred fifteen".