7861005613 has 4 divisors (see below), whose sum is σ = 7955716608. Its totient is φ = 7766294620.

The previous prime is 7861005601. The next prime is 7861005617. The reversal of 7861005613 is 3165001687.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 3165001687 = 23 ⋅137608769.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7861005613 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 (7861005617) 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, 47355373 + ... + 47355538.

It is an arithmetic number, because the mean of its divisors is an integer number (1988929152).

Almost surely, 2^7861005613 is an apocalyptic number.

It is an amenable number.

7861005613 is a deficient number, since it is larger than the sum of its proper divisors (94710995).

7861005613 is an equidigital number, since it uses as much as digits as its factorization.

7861005613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94710994.

The product of its (nonzero) digits is 30240, while the sum is 37.

The square root of 7861005613 is about 88662.3122470873. The cubic root of 7861005613 is about 1988.3493979368.

The spelling of 7861005613 in words is "seven billion, eight hundred sixty-one million, five thousand, six hundred thirteen".