16898731959 has 4 divisors (see below), whose sum is σ = 22531642616. Its totient is φ = 11265821304.

The previous prime is 16898731957. The next prime is 16898731963. The reversal of 16898731959 is 95913789861.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 95913789861 = 3 ⋅31971263287.

It is not a de Polignac number, because 16898731959 - 2¹ = 16898731957 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 16898731959.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16898731951) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2816455324 + ... + 2816455329.

It is an arithmetic number, because the mean of its divisors is an integer number (5632910654).

Almost surely, 2^16898731959 is an apocalyptic number.

16898731959 is a deficient number, since it is larger than the sum of its proper divisors (5632910657).

16898731959 is an equidigital number, since it uses as much as digits as its factorization.

16898731959 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5632910656.

The product of its digits is 29393280, while the sum is 66.

The spelling of 16898731959 in words is "sixteen billion, eight hundred ninety-eight million, seven hundred thirty-one thousand, nine hundred fifty-nine".