4099131613 has 24 divisors (see below), whose sum is σ = 4461405048. Its totient is φ = 3752921088.

The previous prime is 4099131607. The next prime is 4099131689. The reversal of 4099131613 is 3161319904.

It can be written as a sum of positive squares in 4 ways, for example, as 91355364 + 4007776249 = 9558^2 + 63307^2 .

It is not a de Polignac number, because 4099131613 - 2¹³ = 4099123421 is a prime.

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4099132613) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6686695 + ... + 6687307.

It is an arithmetic number, because the mean of its divisors is an integer number (185891877).

Almost surely, 2^4099131613 is an apocalyptic number.

It is an amenable number.

4099131613 is a deficient number, since it is larger than the sum of its proper divisors (362273435).

4099131613 is a wasteful number, since it uses less digits than its factorization.

4099131613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 861 (or 802 counting only the distinct ones).

The product of its (nonzero) digits is 17496, while the sum is 37.

The square root of 4099131613 is about 64024.4610520073. The cubic root of 4099131613 is about 1600.4076582348.

The spelling of 4099131613 in words is "four billion, ninety-nine million, one hundred thirty-one thousand, six hundred thirteen".