913857885 has 12 divisors (see below), whose sum is σ = 1584020412. Its totient is φ = 487390848.

The previous prime is 913857883. The next prime is 913857913. The reversal of 913857885 is 588758319.

It can be written as a sum of positive squares in 2 ways, for example, as 308845476 + 605012409 = 17574^2 + 24597^2 .

It is not a de Polignac number, because 913857885 - 2¹ = 913857883 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (913857883) 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, 10153932 + ... + 10154021.

It is an arithmetic number, because the mean of its divisors is an integer number (132001701).

Almost surely, 2^913857885 is an apocalyptic number.

It is an amenable number.

913857885 is a deficient number, since it is larger than the sum of its proper divisors (670162527).

913857885 is a wasteful number, since it uses less digits than its factorization.

913857885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20307964 (or 20307961 counting only the distinct ones).

The product of its digits is 2419200, while the sum is 54.

The square root of 913857885 is about 30230.0824510950. The cubic root of 913857885 is about 970.4195885526.

The spelling of 913857885 in words is "nine hundred thirteen million, eight hundred fifty-seven thousand, eight hundred eighty-five".