2439118645 has 4 divisors (see below), whose sum is σ = 2926942380. Its totient is φ = 1951294912.

The previous prime is 2439118637. The next prime is 2439118663. The reversal of 2439118645 is 5468119342.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1282642596 + 1156476049 = 35814^2 + 34007^2 .

It is a cyclic number.

It is not a de Polignac number, because 2439118645 - 2³ = 2439118637 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 243911860 + ... + 243911869.

It is an arithmetic number, because the mean of its divisors is an integer number (731735595).

Almost surely, 2^2439118645 is an apocalyptic number.

It is an amenable number.

2439118645 is a deficient number, since it is larger than the sum of its proper divisors (487823735).

2439118645 is an equidigital number, since it uses as much as digits as its factorization.

2439118645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 487823734.

The product of its digits is 207360, while the sum is 43.

The square root of 2439118645 is about 49387.4340799358. The cubic root of 2439118645 is about 1346.1009848894.

The spelling of 2439118645 in words is "two billion, four hundred thirty-nine million, one hundred eighteen thousand, six hundred forty-five".