2198617387 has 2 divisors, whose sum is σ = 2198617388. Its totient is φ = 2198617386.

The previous prime is 2198617307. The next prime is 2198617411. The reversal of 2198617387 is 7837168912.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2198617387 is a prime.

It is not a weakly prime, because it can be changed into another prime (2198617307) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1099308693 + 1099308694.

It is an arithmetic number, because the mean of its divisors is an integer number (1099308694).

Almost surely, 2^2198617387 is an apocalyptic number.

2198617387 is a deficient number, since it is larger than the sum of its proper divisors (1).

2198617387 is an equidigital number, since it uses as much as digits as its factorization.

2198617387 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1016064, while the sum is 52.

The square root of 2198617387 is about 46889.4165777311. The cubic root of 2198617387 is about 1300.3189329914.

The spelling of 2198617387 in words is "two billion, one hundred ninety-eight million, six hundred seventeen thousand, three hundred eighty-seven".