4949644257 has 12 divisors (see below), whose sum is σ = 7150219284. Its totient is φ = 3299424480.

The previous prime is 4949644237. The next prime is 4949644277. The reversal of 4949644257 is 7524469494.

4949644257 is a `hidden beast` number, since 494 + 9 + 64 + 42 + 57 = 666.

It is an interprime number because it is at equal distance from previous prime (4949644237) and next prime (4949644277).

It can be written as a sum of positive squares in 2 ways, for example, as 2465718336 + 2483925921 = 49656^2 + 49839^2 .

It is not a de Polignac number, because 4949644257 - 2¹⁹ = 4949119969 is a prime.

It is not an unprimeable number, because it can be changed into a prime (4949644237) 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, 90943 + ... + 134795.

It is an arithmetic number, because the mean of its divisors is an integer number (595851607).

Almost surely, 2^4949644257 is an apocalyptic number.

It is an amenable number.

4949644257 is a deficient number, since it is larger than the sum of its proper divisors (2200575027).

4949644257 is a wasteful number, since it uses less digits than its factorization.

4949644257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56400 (or 56397 counting only the distinct ones).

The product of its digits is 8709120, while the sum is 54.

The square root of 4949644257 is about 70353.7081965123. The cubic root of 4949644257 is about 1704.2160931150.

The spelling of 4949644257 in words is "four billion, nine hundred forty-nine million, six hundred forty-four thousand, two hundred fifty-seven".