2897945949 has 16 divisors (see below), whose sum is σ = 4105313280. Its totient is φ = 1813172400.

The previous prime is 2897945909. The next prime is 2897946001. The reversal of 2897945949 is 9495497982.

It is not a de Polignac number, because 2897945949 - 2¹⁵ = 2897913181 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2897945949.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2897945909) 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, 231477 + ... + 243674.

It is an arithmetic number, because the mean of its divisors is an integer number (256582080).

Almost surely, 2^2897945949 is an apocalyptic number.

It is an amenable number.

2897945949 is a deficient number, since it is larger than the sum of its proper divisors (1207367331).

2897945949 is a wasteful number, since it uses less digits than its factorization.

2897945949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 475280.

The product of its digits is 58786560, while the sum is 66.

The square root of 2897945949 is about 53832.5733083604. The cubic root of 2897945949 is about 1425.7063819477.

The spelling of 2897945949 in words is "two billion, eight hundred ninety-seven million, nine hundred forty-five thousand, nine hundred forty-nine".