2161798314 has 24 divisors (see below), whose sum is σ = 4681766592. Its totient is φ = 665168400.

The previous prime is 2161798307. The next prime is 2161798333. The reversal of 2161798314 is 4138971612.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1064962 + ... + 1066989.

It is an arithmetic number, because the mean of its divisors is an integer number (195073608).

Almost surely, 2^2161798314 is an apocalyptic number.

2161798314 is an abundant number, since it is smaller than the sum of its proper divisors (2519968278).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2161798314 is a wasteful number, since it uses less digits than its factorization.

2161798314 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2131982 (or 2131969 counting only the distinct ones).

The product of its digits is 72576, while the sum is 42.

The square root of 2161798314 is about 46495.1429076199. The cubic root of 2161798314 is about 1293.0194506267.

The spelling of 2161798314 in words is "two billion, one hundred sixty-one million, seven hundred ninety-eight thousand, three hundred fourteen".