160989765 has 16 divisors (see below), whose sum is σ = 268783488. Its totient is φ = 82127936.

The previous prime is 160989761. The next prime is 160989767. The reversal of 160989765 is 567989061.

It is a cyclic number.

It is not a de Polignac number, because 160989765 - 2² = 160989761 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (160989761) 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, 232974 + ... + 233663.

It is an arithmetic number, because the mean of its divisors is an integer number (16798968).

Almost surely, 2^160989765 is an apocalyptic number.

160989765 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

160989765 is a deficient number, since it is larger than the sum of its proper divisors (107793723).

160989765 is a wasteful number, since it uses less digits than its factorization.

160989765 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 466668.

The product of its (nonzero) digits is 816480, while the sum is 51.

The square root of 160989765 is about 12688.1742185391. The cubic root of 160989765 is about 544.0006544200. Note that the first 3 decimals are identical.

The spelling of 160989765 in words is "one hundred sixty million, nine hundred eighty-nine thousand, seven hundred sixty-five".