2045297279 has 4 divisors (see below), whose sum is σ = 2092862376. Its totient is φ = 1997732184.

The previous prime is 2045297273. The next prime is 2045297299. The reversal of 2045297279 is 9727925402.

It is a happy number.

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

It is a de Polignac number, because none of the positive numbers 2^k-2045297279 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2045297273) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23782484 + ... + 23782569.

It is an arithmetic number, because the mean of its divisors is an integer number (523215594).

Almost surely, 2^2045297279 is an apocalyptic number.

2045297279 is a deficient number, since it is larger than the sum of its proper divisors (47565097).

2045297279 is an equidigital number, since it uses as much as digits as its factorization.

2045297279 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47565096.

The product of its (nonzero) digits is 635040, while the sum is 47.

The square root of 2045297279 is about 45224.9630071712. The cubic root of 2045297279 is about 1269.3619625602.

The spelling of 2045297279 in words is "two billion, forty-five million, two hundred ninety-seven thousand, two hundred seventy-nine".