2317770989 has 4 divisors (see below), whose sum is σ = 2321528124. Its totient is φ = 2314013856.

The previous prime is 2317770979. The next prime is 2317770991. The reversal of 2317770989 is 9890777132.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 639230089 + 1678540900 = 25283^2 + 40970^2 .

It is a cyclic number.

It is not a de Polignac number, because 2317770989 - 2⁸ = 2317770733 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 2317770989.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2317770919) 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, 1877642 + ... + 1878875.

It is an arithmetic number, because the mean of its divisors is an integer number (580382031).

Almost surely, 2^2317770989 is an apocalyptic number.

It is an amenable number.

2317770989 is a deficient number, since it is larger than the sum of its proper divisors (3757135).

2317770989 is an equidigital number, since it uses as much as digits as its factorization.

2317770989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3757134.

The product of its (nonzero) digits is 1333584, while the sum is 53.

The square root of 2317770989 is about 48143.2340936917. The cubic root of 2317770989 is about 1323.3970865124.

The spelling of 2317770989 in words is "two billion, three hundred seventeen million, seven hundred seventy thousand, nine hundred eighty-nine".