158087915 has 4 divisors (see below), whose sum is σ = 189705504. Its totient is φ = 126470328.

The previous prime is 158087911. The next prime is 158087921. The reversal of 158087915 is 519780851.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 519780851 = 353 ⋅1472467.

It is a cyclic number.

It is not a de Polignac number, because 158087915 - 2² = 158087911 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (158087911) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15808787 + ... + 15808796.

It is an arithmetic number, because the mean of its divisors is an integer number (47426376).

Almost surely, 2^158087915 is an apocalyptic number.

158087915 is a deficient number, since it is larger than the sum of its proper divisors (31617589).

158087915 is an equidigital number, since it uses as much as digits as its factorization.

158087915 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31617588.

The product of its (nonzero) digits is 100800, while the sum is 44.

The square root of 158087915 is about 12573.3016745801. The cubic root of 158087915 is about 540.7122688261.

The spelling of 158087915 in words is "one hundred fifty-eight million, eighty-seven thousand, nine hundred fifteen".