160640993 has 8 divisors (see below), whose sum is σ = 171714816. Its totient is φ = 149908000.

The previous prime is 160640989. The next prime is 160641017. The reversal of 160640993 is 399046061.

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

It is a cyclic number.

It is not a de Polignac number, because 160640993 - 2² = 160640989 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (160640093) 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, 84233 + ... + 86118.

It is an arithmetic number, because the mean of its divisors is an integer number (21464352).

Almost surely, 2^160640993 is an apocalyptic number.

It is an amenable number.

160640993 is a deficient number, since it is larger than the sum of its proper divisors (11073823).

160640993 is a wasteful number, since it uses less digits than its factorization.

160640993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170415.

The product of its (nonzero) digits is 34992, while the sum is 38.

The square root of 160640993 is about 12674.4227876460. The cubic root of 160640993 is about 543.6075251325.

The spelling of 160640993 in words is "one hundred sixty million, six hundred forty thousand, nine hundred ninety-three".