158996887 has 4 divisors (see below), whose sum is σ = 181710736. Its totient is φ = 136283040.

The previous prime is 158996867. The next prime is 158996891. The reversal of 158996887 is 788699851.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 788699851 = 43 ⋅18341857.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-158996887 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (158996867) 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, 11356914 + ... + 11356927.

It is an arithmetic number, because the mean of its divisors is an integer number (45427684).

Almost surely, 2^158996887 is an apocalyptic number.

158996887 is a deficient number, since it is larger than the sum of its proper divisors (22713849).

158996887 is an equidigital number, since it uses as much as digits as its factorization.

158996887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22713848.

The product of its digits is 8709120, while the sum is 61.

The square root of 158996887 is about 12609.3967738350. The cubic root of 158996887 is about 541.7466159019.

The spelling of 158996887 in words is "one hundred fifty-eight million, nine hundred ninety-six thousand, eight hundred eighty-seven".