2081915418 has 32 divisors (see below), whose sum is σ = 4619358720. Its totient is φ = 620189360.

The previous prime is 2081915417. The next prime is 2081915467. The reversal of 2081915418 is 8145191802.

It is a super-2 number, since 2×2081915418² = 8668743615412229448, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2081915417) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 263430 + ... + 271217.

It is an arithmetic number, because the mean of its divisors is an integer number (144354960).

Almost surely, 2^2081915418 is an apocalyptic number.

2081915418 is an abundant number, since it is smaller than the sum of its proper divisors (2537443302).

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

2081915418 is a wasteful number, since it uses less digits than its factorization.

2081915418 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 534722.

The product of its (nonzero) digits is 23040, while the sum is 39.

The square root of 2081915418 is about 45628.0113307604. The cubic root of 2081915418 is about 1276.8925717247.

The spelling of 2081915418 in words is "two billion, eighty-one million, nine hundred fifteen thousand, four hundred eighteen".