2298217991987 has 2 divisors, whose sum is σ = 2298217991988. Its totient is φ = 2298217991986.

The previous prime is 2298217991983. The next prime is 2298217992011. The reversal of 2298217991987 is 7891997128922.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2298217991987 - 2² = 2298217991983 is a prime.

It is not a weakly prime, because it can be changed into another prime (2298217991981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1149108995993 + 1149108995994.

It is an arithmetic number, because the mean of its divisors is an integer number (1149108995994).

Almost surely, 2^{2298217991987} is an apocalyptic number.

2298217991987 is a deficient number, since it is larger than the sum of its proper divisors (1).

2298217991987 is an equidigital number, since it uses as much as digits as its factorization.

2298217991987 is an evil number, because the sum of its binary digits is even.

The product of its digits is 164602368, while the sum is 74.

The spelling of 2298217991987 in words is "two trillion, two hundred ninety-eight billion, two hundred seventeen million, nine hundred ninety-one thousand, nine hundred eighty-seven".