7867749413 has 16 divisors (see below), whose sum is σ = 8448223536. Its totient is φ = 7301038080.

The previous prime is 7867749319. The next prime is 7867749419. The reversal of 7867749413 is 3149477687.

It can be written as a sum of positive squares in 8 ways, for example, as 2365444 + 7865383969 = 1538^2 + 88687^2 .

It is a cyclic number.

It is not a de Polignac number, because 7867749413 - 2²⁰ = 7866700837 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 (7867749419) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 360143 + ... + 381363.

It is an arithmetic number, because the mean of its divisors is an integer number (528013971).

Almost surely, 2^7867749413 is an apocalyptic number.

It is an amenable number.

7867749413 is a deficient number, since it is larger than the sum of its proper divisors (580474123).

7867749413 is a wasteful number, since it uses less digits than its factorization.

7867749413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21544.

The product of its digits is 7112448, while the sum is 56.

The square root of 7867749413 is about 88700.3349091761. The cubic root of 7867749413 is about 1988.9178238571.

The spelling of 7867749413 in words is "seven billion, eight hundred sixty-seven million, seven hundred forty-nine thousand, four hundred thirteen".