2129598849 has 16 divisors (see below), whose sum is σ = 3311331200. Its totient is φ = 1216913040.

The previous prime is 2129598841. The next prime is 2129598881. The reversal of 2129598849 is 9488959212.

It is not a de Polignac number, because 2129598849 - 2³ = 2129598841 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2129598841) 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, 1033762 + ... + 1035819.

It is an arithmetic number, because the mean of its divisors is an integer number (206958200).

Almost surely, 2^2129598849 is an apocalyptic number.

It is an amenable number.

2129598849 is a deficient number, since it is larger than the sum of its proper divisors (1181732351).

2129598849 is an equidigital number, since it uses as much as digits as its factorization.

2129598849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2069605 (or 2069591 counting only the distinct ones).

The product of its digits is 3732480, while the sum is 57.

The square root of 2129598849 is about 46147.5768486277. The cubic root of 2129598849 is about 1286.5675730268.

The spelling of 2129598849 in words is "two billion, one hundred twenty-nine million, five hundred ninety-eight thousand, eight hundred forty-nine".