160939993 has 8 divisors (see below), whose sum is σ = 168143616. Its totient is φ = 153753600.

The previous prime is 160939991. The next prime is 160940027. The reversal of 160939993 is 399939061.

It is a happy number.

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 160939993 - 2¹ = 160939991 is a prime.

It is not an unprimeable number, because it can be changed into a prime (160939991) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17113 + ... + 24793.

It is an arithmetic number, because the mean of its divisors is an integer number (21017952).

Almost surely, 2^160939993 is an apocalyptic number.

It is an amenable number.

160939993 is a deficient number, since it is larger than the sum of its proper divisors (7203623).

160939993 is an equidigital number, since it uses as much as digits as its factorization.

160939993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8615.

The product of its (nonzero) digits is 354294, while the sum is 49.

The square root of 160939993 is about 12686.2127130204. The cubic root of 160939993 is about 543.9445871055.

The spelling of 160939993 in words is "one hundred sixty million, nine hundred thirty-nine thousand, nine hundred ninety-three".