3145715861 has 4 divisors (see below), whose sum is σ = 3192666912. Its totient is φ = 3098764812.

The previous prime is 3145715851. The next prime is 3145715873. The reversal of 3145715861 is 1685175413.

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 a cyclic number.

It is not a de Polignac number, because 3145715861 - 2¹⁴ = 3145699477 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 (3145715851) 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, 23475425 + ... + 23475558.

It is an arithmetic number, because the mean of its divisors is an integer number (798166728).

Almost surely, 2^3145715861 is an apocalyptic number.

It is an amenable number.

3145715861 is a deficient number, since it is larger than the sum of its proper divisors (46951051).

3145715861 is an equidigital number, since it uses as much as digits as its factorization.

3145715861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46951050.

The product of its digits is 100800, while the sum is 41.

The square root of 3145715861 is about 56086.6816722116. The cubic root of 3145715861 is about 1465.2323457428.

It can be divided in two parts, 314 and 5715861, that added together give a palindrome (5716175).

The spelling of 3145715861 in words is "three billion, one hundred forty-five million, seven hundred fifteen thousand, eight hundred sixty-one".