2119465649 has 12 divisors (see below), whose sum is σ = 2467307700. Its totient is φ = 1815353568.

The previous prime is 2119465639. The next prime is 2119465661. The reversal of 2119465649 is 9465649112.

It can be written as a sum of positive squares in 2 ways, for example, as 884646049 + 1234819600 = 29743^2 + 35140^2 .

It is not a de Polignac number, because 2119465649 - 2⁸ = 2119465393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2119465639) 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, 54887 + ... + 85155.

It is an arithmetic number, because the mean of its divisors is an integer number (205608975).

Almost surely, 2^2119465649 is an apocalyptic number.

It is an amenable number.

2119465649 is a deficient number, since it is larger than the sum of its proper divisors (347842051).

2119465649 is a wasteful number, since it uses less digits than its factorization.

2119465649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31712 (or 31705 counting only the distinct ones).

The product of its digits is 466560, while the sum is 47.

The square root of 2119465649 is about 46037.6546861371. The cubic root of 2119465649 is about 1284.5237171634.

The spelling of 2119465649 in words is "two billion, one hundred nineteen million, four hundred sixty-five thousand, six hundred forty-nine".