2945720918 has 16 divisors (see below), whose sum is σ = 5050709664. Its totient is φ = 1262226240.

The previous prime is 2945720909. The next prime is 2945720941. The reversal of 2945720918 is 8190275492.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 80396 + ... + 111152.

It is an arithmetic number, because the mean of its divisors is an integer number (315669354).

Almost surely, 2^2945720918 is an apocalyptic number.

2945720918 is a deficient number, since it is larger than the sum of its proper divisors (2104988746).

2945720918 is a wasteful number, since it uses less digits than its factorization.

2945720918 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37607.

The product of its (nonzero) digits is 362880, while the sum is 47.

The square root of 2945720918 is about 54274.4960179272. The cubic root of 2945720918 is about 1433.4983572150.

The spelling of 2945720918 in words is "two billion, nine hundred forty-five million, seven hundred twenty thousand, nine hundred eighteen".