7855857950 has 24 divisors (see below), whose sum is σ = 14616731880. Its totient is φ = 3141303200.

The previous prime is 7855857949. The next prime is 7855857959. The reversal of 7855857950 is 597585587.

It is a self number, because there is not a number n which added to its sum of digits gives 7855857950.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7855857959) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 136661 + ... + 185439.

It is an arithmetic number, because the mean of its divisors is an integer number (609030495).

Almost surely, 2^7855857950 is an apocalyptic number.

7855857950 is a deficient number, since it is larger than the sum of its proper divisors (6760873930).

7855857950 is a wasteful number, since it uses less digits than its factorization.

7855857950 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52012 (or 52007 counting only the distinct ones).

The product of its (nonzero) digits is 17640000, while the sum is 59.

The square root of 7855857950 is about 88633.2778926741. The cubic root of 7855857950 is about 1987.9152894567.

The spelling of 7855857950 in words is "seven billion, eight hundred fifty-five million, eight hundred fifty-seven thousand, nine hundred fifty".