2199999915 has 12 divisors (see below), whose sum is σ = 3813333264. Its totient is φ = 1173333264.

The previous prime is 2199999899. The next prime is 2199999917. The reversal of 2199999915 is 5199999912.

It is not a de Polignac number, because 2199999915 - 2⁴ = 2199999899 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2199999917) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 24444399 + ... + 24444488.

It is an arithmetic number, because the mean of its divisors is an integer number (317777772).

Almost surely, 2^2199999915 is an apocalyptic number.

2199999915 is a deficient number, since it is larger than the sum of its proper divisors (1613333349).

2199999915 is a wasteful number, since it uses less digits than its factorization.

2199999915 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48888898 (or 48888895 counting only the distinct ones).

The product of its digits is 5314410, while the sum is 63.

The square root of 2199999915 is about 46904.1566921312. The cubic root of 2199999915 is about 1300.5914301013.

The spelling of 2199999915 in words is "two billion, one hundred ninety-nine million, nine hundred ninety-nine thousand, nine hundred fifteen".