2989898731 has 16 divisors (see below), whose sum is σ = 3146217984. Its totient is φ = 2835860544.

The previous prime is 2989898689. The next prime is 2989898759. The reversal of 2989898731 is 1378989892.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2989898731 is a prime.

It is a super-2 number, since 2×2989898731² = 17878988843270820722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2989818731) 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 15 ways as a sum of consecutive naturals, for example, 2724975 + ... + 2726071.

It is an arithmetic number, because the mean of its divisors is an integer number (196638624).

Almost surely, 2^2989898731 is an apocalyptic number.

2989898731 is a deficient number, since it is larger than the sum of its proper divisors (156319253).

2989898731 is a wasteful number, since it uses less digits than its factorization.

2989898731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2010.

The product of its digits is 15676416, while the sum is 64.

The square root of 2989898731 is about 54679.9664502457. The cubic root of 2989898731 is about 1440.6290222256.

It can be divided in two parts, 298989 and 8731, that added together give a triangular number (307720 = T₇₈₄).

The spelling of 2989898731 in words is "two billion, nine hundred eighty-nine million, eight hundred ninety-eight thousand, seven hundred thirty-one".