159168993 has 8 divisors (see below), whose sum is σ = 221452608. Its totient is φ = 101499024.

The previous prime is 159168979. The next prime is 159169033. The reversal of 159168993 is 399861951.

It is a happy number.

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

It is not a de Polignac number, because 159168993 - 2⁹ = 159168481 is a prime.

It is not an unprimeable number, because it can be changed into a prime (159168923) 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, 1153330 + ... + 1153467.

It is an arithmetic number, because the mean of its divisors is an integer number (27681576).

Almost surely, 2^159168993 is an apocalyptic number.

It is an amenable number.

159168993 is a deficient number, since it is larger than the sum of its proper divisors (62283615).

159168993 is a wasteful number, since it uses less digits than its factorization.

159168993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2306823.

The product of its digits is 524880, while the sum is 51.

The square root of 159168993 is about 12616.2194416553. The cubic root of 159168993 is about 541.9420164184.

The spelling of 159168993 in words is "one hundred fifty-nine million, one hundred sixty-eight thousand, nine hundred ninety-three".