2319400857 has 8 divisors (see below), whose sum is σ = 3093081984. Its totient is φ = 1545993488.

The previous prime is 2319400849. The next prime is 2319400859. The reversal of 2319400857 is 7580049132.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2319400857 - 2³ = 2319400849 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2319400859) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 47778 + ... + 83195.

It is an arithmetic number, because the mean of its divisors is an integer number (386635248).

Almost surely, 2^2319400857 is an apocalyptic number.

It is an amenable number.

2319400857 is a deficient number, since it is larger than the sum of its proper divisors (773681127).

2319400857 is a wasteful number, since it uses less digits than its factorization.

2319400857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136879.

The product of its (nonzero) digits is 60480, while the sum is 39.

The square root of 2319400857 is about 48160.1583988259. The cubic root of 2319400857 is about 1323.7072202824.

Adding to 2319400857 its reverse (7580049132), we get a palindrome (9899449989).

The spelling of 2319400857 in words is "two billion, three hundred nineteen million, four hundred thousand, eight hundred fifty-seven".