2819568230649 has 21 divisors (see below), whose sum is σ = 4227486461589. Its totient is φ = 1879681928940.

The previous prime is 2819568230641. The next prime is 2819568230659. The reversal of 2819568230649 is 9460328659182.

The square root of 2819568230649 is 1679157.

It is a perfect power (a square), and thus also a powerful number.

2819568230649 is a `hidden beast` number, since 2 + 8 + 1 + 9 + 568 + 2 + 3 + 0 + 64 + 9 = 666.

It is not a de Polignac number, because 2819568230649 - 2³ = 2819568230641 is a prime.

It is a super-2 number, since 2×2819568230649² (a number of 26 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2819568230641) by changing a digit.

It is a polite number, since it can be written in 20 ways as a sum of consecutive naturals, for example, 45306144 + ... + 45368334.

Almost surely, 2^{2819568230649} is an apocalyptic number.

2819568230649 is the 1679157-th square number.

2819568230649 is the 839579-th centered octagonal number.

It is an amenable number.

2819568230649 is a deficient number, since it is larger than the sum of its proper divisors (1407918230940).

2819568230649 is an frugal number, since it uses more digits than its factorization.

2819568230649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124400 (or 62194 counting only the distinct ones).

The product of its (nonzero) digits is 44789760, while the sum is 63.

The spelling of 2819568230649 in words is "two trillion, eight hundred nineteen billion, five hundred sixty-eight million, two hundred thirty thousand, six hundred forty-nine".