2897783889 has 64 divisors (see below), whose sum is σ = 5308520448. Its totient is φ = 1357171200.

The previous prime is 2897783881. The next prime is 2897783891. The reversal of 2897783889 is 9883877982.

It is not a de Polignac number, because 2897783889 - 2³ = 2897783881 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2897783881) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 117909 + ... + 140349.

It is an arithmetic number, because the mean of its divisors is an integer number (82945632).

Almost surely, 2^2897783889 is an apocalyptic number.

It is an amenable number.

2897783889 is a deficient number, since it is larger than the sum of its proper divisors (2410736559).

2897783889 is a wasteful number, since it uses less digits than its factorization.

2897783889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22518.

The product of its digits is 97542144, while the sum is 69.

The square root of 2897783889 is about 53831.0680648267. The cubic root of 2897783889 is about 1425.6798051599.

The spelling of 2897783889 in words is "two billion, eight hundred ninety-seven million, seven hundred eighty-three thousand, eight hundred eighty-nine".