4649139931 has 2 divisors, whose sum is σ = 4649139932. Its totient is φ = 4649139930.

The previous prime is 4649139899. The next prime is 4649139973. The reversal of 4649139931 is 1399319464.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 4649139931 - 2⁵ = 4649139899 is a prime.

It is a super-2 number, since 2×4649139931² = 43229004196037369522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (4649139331) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2324569965 + 2324569966.

It is an arithmetic number, because the mean of its divisors is an integer number (2324569966).

Almost surely, 2^4649139931 is an apocalyptic number.

4649139931 is a deficient number, since it is larger than the sum of its proper divisors (1).

4649139931 is an equidigital number, since it uses as much as digits as its factorization.

4649139931 is an evil number, because the sum of its binary digits is even.

The product of its digits is 629856, while the sum is 49.

The square root of 4649139931 is about 68184.6018614174. The cubic root of 4649139931 is about 1669.0046216774.

The spelling of 4649139931 in words is "four billion, six hundred forty-nine million, one hundred thirty-nine thousand, nine hundred thirty-one".