2198530637 has 2 divisors, whose sum is σ = 2198530638. Its totient is φ = 2198530636.

The previous prime is 2198530619. The next prime is 2198530657. The reversal of 2198530637 is 7360358912.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1196744836 + 1001785801 = 34594^2 + 31651^2 .

It is a cyclic number.

It is not a de Polignac number, because 2198530637 - 2²⁰ = 2197482061 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2198530657) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1099265318 + 1099265319.

It is an arithmetic number, because the mean of its divisors is an integer number (1099265319).

Almost surely, 2^2198530637 is an apocalyptic number.

It is an amenable number.

2198530637 is a deficient number, since it is larger than the sum of its proper divisors (1).

2198530637 is an equidigital number, since it uses as much as digits as its factorization.

2198530637 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 272160, while the sum is 44.

The square root of 2198530637 is about 46888.4915197749. The cubic root of 2198530637 is about 1300.3018307052.

The spelling of 2198530637 in words is "two billion, one hundred ninety-eight million, five hundred thirty thousand, six hundred thirty-seven".