2904189681 has 8 divisors (see below), whose sum is σ = 3976908544. Its totient is φ = 1883798640.

The previous prime is 2904189667. The next prime is 2904189683. The reversal of 2904189681 is 1869814092.

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

It is not a de Polignac number, because 2904189681 - 2²² = 2899995377 is a prime.

It is a super-2 number, since 2×2904189681² = 16868635406453763522, which contains 22 as substring.

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 2904189681.

It is not an unprimeable number, because it can be changed into a prime (2904189683) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13081825 + ... + 13082046.

It is an arithmetic number, because the mean of its divisors is an integer number (497113568).

Almost surely, 2^2904189681 is an apocalyptic number.

It is an amenable number.

2904189681 is a deficient number, since it is larger than the sum of its proper divisors (1072718863).

2904189681 is a wasteful number, since it uses less digits than its factorization.

2904189681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26163911.

The product of its (nonzero) digits is 248832, while the sum is 48.

The square root of 2904189681 is about 53890.5342430375. The cubic root of 2904189681 is about 1426.7295598954.

The spelling of 2904189681 in words is "two billion, nine hundred four million, one hundred eighty-nine thousand, six hundred eighty-one".