4657991213 has 2 divisors, whose sum is σ = 4657991214. Its totient is φ = 4657991212.

The previous prime is 4657991207. The next prime is 4657991249. The reversal of 4657991213 is 3121997564.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2806668484 + 1851322729 = 52978^2 + 43027^2 .

It is a cyclic number.

It is not a de Polignac number, because 4657991213 - 2⁸ = 4657990957 is a prime.

It is a super-2 number, since 2×4657991213² = 43393764280770422738, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4657991203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2328995606 + 2328995607.

It is an arithmetic number, because the mean of its divisors is an integer number (2328995607).

Almost surely, 2^4657991213 is an apocalyptic number.

It is an amenable number.

4657991213 is a deficient number, since it is larger than the sum of its proper divisors (1).

4657991213 is an equidigital number, since it uses as much as digits as its factorization.

4657991213 is an evil number, because the sum of its binary digits is even.

The product of its digits is 408240, while the sum is 47.

The square root of 4657991213 is about 68249.4777489176. The cubic root of 4657991213 is about 1670.0631303898.

The spelling of 4657991213 in words is "four billion, six hundred fifty-seven million, nine hundred ninety-one thousand, two hundred thirteen".