2249981649 has 12 divisors (see below), whose sum is σ = 3252764112. Its totient is φ = 1498699800.

The previous prime is 2249981627. The next prime is 2249981663. The reversal of 2249981649 is 9461899422.

It is not a de Polignac number, because 2249981649 - 2⁷ = 2249981521 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2249981595 and 2249981604.

It is not an unprimeable number, because it can be changed into a prime (2249981449) 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, 96207 + ... + 117284.

It is an arithmetic number, because the mean of its divisors is an integer number (271063676).

Almost surely, 2^2249981649 is an apocalyptic number.

It is an amenable number.

2249981649 is a deficient number, since it is larger than the sum of its proper divisors (1002782463).

2249981649 is a wasteful number, since it uses less digits than its factorization.

2249981649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 214668 (or 214665 counting only the distinct ones).

The product of its digits is 2239488, while the sum is 54.

The square root of 2249981649 is about 47433.9714656068. The cubic root of 2249981649 is about 1310.3671346336.

The spelling of 2249981649 in words is "two billion, two hundred forty-nine million, nine hundred eighty-one thousand, six hundred forty-nine".