2309649960 has 32 divisors (see below), whose sum is σ = 6928950240. Its totient is φ = 615906624.

The previous prime is 2309649911. The next prime is 2309649967. The reversal of 2309649960 is 699469032.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (2309649967) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9623422 + ... + 9623661.

It is an arithmetic number, because the mean of its divisors is an integer number (216529695).

Almost surely, 2^2309649960 is an apocalyptic number.

2309649960 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2309649960 is an abundant number, since it is smaller than the sum of its proper divisors (4619300280).

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

2309649960 is a wasteful number, since it uses less digits than its factorization.

2309649960 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19247097 (or 19247093 counting only the distinct ones).

The product of its (nonzero) digits is 629856, while the sum is 48.

The square root of 2309649960 is about 48058.8177132979. The cubic root of 2309649960 is about 1321.8496338263.

The spelling of 2309649960 in words is "two billion, three hundred nine million, six hundred forty-nine thousand, nine hundred sixty".