2645919915 has 16 divisors (see below), whose sum is σ = 4234687776. Its totient is φ = 1410752000.

The previous prime is 2645919911. The next prime is 2645919919. The reversal of 2645919915 is 5199195462.

It is an interprime number because it is at equal distance from previous prime (2645919911) and next prime (2645919919).

It is not a de Polignac number, because 2645919915 - 2² = 2645919911 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2645919911) 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 15 ways as a sum of consecutive naturals, for example, 32965 + ... + 79865.

It is an arithmetic number, because the mean of its divisors is an integer number (264667986).

Almost surely, 2^2645919915 is an apocalyptic number.

2645919915 is a deficient number, since it is larger than the sum of its proper divisors (1588767861).

2645919915 is a wasteful number, since it uses less digits than its factorization.

2645919915 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50670.

The product of its digits is 874800, while the sum is 51.

The square root of 2645919915 is about 51438.5061505483. The cubic root of 2645919915 is about 1383.1169333275.

The spelling of 2645919915 in words is "two billion, six hundred forty-five million, nine hundred nineteen thousand, nine hundred fifteen".