2119598857 has 4 divisors (see below), whose sum is σ = 2119962640. Its totient is φ = 2119235076.

The previous prime is 2119598851. The next prime is 2119598861. The reversal of 2119598857 is 7588959112.

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 2119598857 - 2⁷ = 2119598729 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2119598798 and 2119598807.

It is not an unprimeable number, because it can be changed into a prime (2119598851) 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, 173007 + ... + 184852.

It is an arithmetic number, because the mean of its divisors is an integer number (529990660).

Almost surely, 2^2119598857 is an apocalyptic number.

It is an amenable number.

2119598857 is a deficient number, since it is larger than the sum of its proper divisors (363783).

2119598857 is an equidigital number, since it uses as much as digits as its factorization.

2119598857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 363782.

The product of its digits is 1814400, while the sum is 55.

The square root of 2119598857 is about 46039.1013921862. The cubic root of 2119598857 is about 1284.5506272874.

The spelling of 2119598857 in words is "two billion, one hundred nineteen million, five hundred ninety-eight thousand, eight hundred fifty-seven".