2081169904 has 40 divisors (see below), whose sum is σ = 4590099072. Its totient is φ = 904854720.

The previous prime is 2081169889. The next prime is 2081169907. The reversal of 2081169904 is 4099611802.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2081169907) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 253014 + ... + 261109.

Almost surely, 2^2081169904 is an apocalyptic number.

It is an amenable number.

2081169904 is an abundant number, since it is smaller than the sum of its proper divisors (2508929168).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2081169904 is a wasteful number, since it uses less digits than its factorization.

2081169904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 514165 (or 514159 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 40.

The square root of 2081169904 is about 45619.8411220381. The cubic root of 2081169904 is about 1276.7401391891.

The spelling of 2081169904 in words is "two billion, eighty-one million, one hundred sixty-nine thousand, nine hundred four".