160687891 has 16 divisors (see below), whose sum is σ = 201507264. Its totient is φ = 124735104.

The previous prime is 160687889. The next prime is 160687951. The reversal of 160687891 is 198786061.

It is not a de Polignac number, because 160687891 - 2¹ = 160687889 is a prime.

It is not an unprimeable number, because it can be changed into a prime (160687801) 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, 11836 + ... + 21481.

It is an arithmetic number, because the mean of its divisors is an integer number (12594204).

Almost surely, 2^160687891 is an apocalyptic number.

160687891 is a deficient number, since it is larger than the sum of its proper divisors (40819373).

160687891 is a wasteful number, since it uses less digits than its factorization.

160687891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33390.

The product of its (nonzero) digits is 145152, while the sum is 46.

The square root of 160687891 is about 12676.2727566111. The cubic root of 160687891 is about 543.6604207741.

The spelling of 160687891 in words is "one hundred sixty million, six hundred eighty-seven thousand, eight hundred ninety-one".