160531989 has 8 divisors (see below), whose sum is σ = 216121152. Its totient is φ = 105982080.

The previous prime is 160531967. The next prime is 160531991. The reversal of 160531989 is 989135061.

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

It is not a de Polignac number, because 160531989 - 2⁵ = 160531957 is a prime.

It is a super-2 number, since 2×160531989² = 51541038984592242, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 160531989.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (160531909) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 259452 + ... + 260069.

It is an arithmetic number, because the mean of its divisors is an integer number (27015144).

Almost surely, 2^160531989 is an apocalyptic number.

It is an amenable number.

160531989 is a deficient number, since it is larger than the sum of its proper divisors (55589163).

160531989 is a wasteful number, since it uses less digits than its factorization.

160531989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 519627.

The product of its (nonzero) digits is 58320, while the sum is 42.

The square root of 160531989 is about 12670.1219015446. The cubic root of 160531989 is about 543.4845411599.

The spelling of 160531989 in words is "one hundred sixty million, five hundred thirty-one thousand, nine hundred eighty-nine".