2081398023 has 12 divisors (see below), whose sum is σ = 3011328840. Its totient is φ = 1385353296.

The previous prime is 2081398013. The next prime is 2081398049. The reversal of 2081398023 is 3208931802.

It is a happy number.

It is not a de Polignac number, because 2081398023 - 2⁸ = 2081397767 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2081398013) 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 11 ways as a sum of consecutive naturals, for example, 181236 + ... + 192377.

It is an arithmetic number, because the mean of its divisors is an integer number (250944070).

Almost surely, 2^2081398023 is an apocalyptic number.

2081398023 is a deficient number, since it is larger than the sum of its proper divisors (929930817).

2081398023 is a wasteful number, since it uses less digits than its factorization.

2081398023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 374238 (or 374235 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The square root of 2081398023 is about 45622.3412704784. The cubic root of 2081398023 is about 1276.7867857159.

The spelling of 2081398023 in words is "two billion, eighty-one million, three hundred ninety-eight thousand, twenty-three".