159997965 has 32 divisors (see below), whose sum is σ = 272543616. Its totient is φ = 79872000.

The previous prime is 159997933. The next prime is 159997979. The reversal of 159997965 is 569799951.

It is not a de Polignac number, because 159997965 - 2⁵ = 159997933 is a prime.

It is a super-3 number, since 3×159997965³ (a number of 26 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 159997899 and 159997908.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 47590 + ... + 50840.

It is an arithmetic number, because the mean of its divisors is an integer number (8516988).

Almost surely, 2^159997965 is an apocalyptic number.

159997965 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

159997965 is a deficient number, since it is larger than the sum of its proper divisors (112545651).

159997965 is a wasteful number, since it uses less digits than its factorization.

159997965 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3469.

The product of its digits is 6889050, while the sum is 60.

The square root of 159997965 is about 12649.0301999798. The cubic root of 159997965 is about 542.8812217093.

The spelling of 159997965 in words is "one hundred fifty-nine million, nine hundred ninety-seven thousand, nine hundred sixty-five".