158927681891 has 8 divisors (see below), whose sum is σ = 173543827968. Its totient is φ = 144339565000.

The previous prime is 158927681879. The next prime is 158927681893. The reversal of 158927681891 is 198186729851.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-158927681891 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (158927681893) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6995435 + ... + 7018116.

It is an arithmetic number, because the mean of its divisors is an integer number (21692978496).

Almost surely, 2^158927681891 is an apocalyptic number.

158927681891 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

158927681891 is a deficient number, since it is larger than the sum of its proper divisors (14616146077).

158927681891 is a wasteful number, since it uses less digits than its factorization.

158927681891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14014593.

The product of its digits is 17418240, while the sum is 65.

The spelling of 158927681891 in words is "one hundred fifty-eight billion, nine hundred twenty-seven million, six hundred eighty-one thousand, eight hundred ninety-one".