4990771613 has 4 divisors (see below), whose sum is σ = 4999188348. Its totient is φ = 4982354880.

The previous prime is 4990771609. The next prime is 4990771619. The reversal of 4990771613 is 3161770994.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2141560729 + 2849210884 = 46277^2 + 53378^2 .

It is a cyclic number.

It is not a de Polignac number, because 4990771613 - 2² = 4990771609 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4990771619) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4207478 + ... + 4208663.

It is an arithmetic number, because the mean of its divisors is an integer number (1249797087).

Almost surely, 2^4990771613 is an apocalyptic number.

It is an amenable number.

4990771613 is a deficient number, since it is larger than the sum of its proper divisors (8416735).

4990771613 is an equidigital number, since it uses as much as digits as its factorization.

4990771613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8416734.

The product of its (nonzero) digits is 285768, while the sum is 47.

The square root of 4990771613 is about 70645.3934308529. The cubic root of 4990771613 is about 1708.9232774618.

The spelling of 4990771613 in words is "four billion, nine hundred ninety million, seven hundred seventy-one thousand, six hundred thirteen".