17990159 has 12 divisors (see below), whose sum is σ = 19921272. Its totient is φ = 16233360.

The previous prime is 17990153. The next prime is 17990183. The reversal of 17990159 is 95109971.

It is a happy number.

It is not a de Polignac number, because 17990159 - 2¹⁶ = 17924623 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (17990153) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 18524 + ... + 19470.

It is an arithmetic number, because the mean of its divisors is an integer number (1660106).

Almost surely, 2^17990159 is an apocalyptic number.

17990159 is a deficient number, since it is larger than the sum of its proper divisors (1931113).

17990159 is a wasteful number, since it uses less digits than its factorization.

17990159 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1126 (or 1115 counting only the distinct ones).

The product of its (nonzero) digits is 25515, while the sum is 41.

The square root of 17990159 is about 4241.4807555852. The cubic root of 17990159 is about 262.0263701290.

The spelling of 17990159 in words is "seventeen million, nine hundred ninety thousand, one hundred fifty-nine".