7856005413 has 4 divisors (see below), whose sum is σ = 10474673888. Its totient is φ = 5237336940.

The previous prime is 7856005393. The next prime is 7856005429. The reversal of 7856005413 is 3145006587.

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.

It is not a de Polignac number, because 7856005413 - 2⁶ = 7856005349 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 (7856005463) 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, 1309334233 + ... + 1309334238.

It is an arithmetic number, because the mean of its divisors is an integer number (2618668472).

Almost surely, 2^7856005413 is an apocalyptic number.

It is an amenable number.

7856005413 is a deficient number, since it is larger than the sum of its proper divisors (2618668475).

7856005413 is a wasteful number, since it uses less digits than its factorization.

7856005413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2618668474.

The product of its (nonzero) digits is 100800, while the sum is 39.

The square root of 7856005413 is about 88634.1097602949. The cubic root of 7856005413 is about 1987.9277278231.

The spelling of 7856005413 in words is "seven billion, eight hundred fifty-six million, five thousand, four hundred thirteen".