160214991 has 4 divisors (see below), whose sum is σ = 213619992. Its totient is φ = 106809992.

The previous prime is 160214981. The next prime is 160214993. The reversal of 160214991 is 199412061.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 160214991 - 2⁵ = 160214959 is a prime.

It is a super-2 number, since 2×160214991² = 51337686682260162, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (160214993) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26702496 + ... + 26702501.

It is an arithmetic number, because the mean of its divisors is an integer number (53404998).

Almost surely, 2^160214991 is an apocalyptic number.

160214991 is a deficient number, since it is larger than the sum of its proper divisors (53405001).

160214991 is an equidigital number, since it uses as much as digits as its factorization.

160214991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53405000.

The product of its (nonzero) digits is 3888, while the sum is 33.

The square root of 160214991 is about 12657.6060532788. The cubic root of 160214991 is about 543.1265708901.

It can be divided in two parts, 16021 and 4991, that added together give a palindrome (21012).

The spelling of 160214991 in words is "one hundred sixty million, two hundred fourteen thousand, nine hundred ninety-one".