2198359693 has 2 divisors, whose sum is σ = 2198359694. Its totient is φ = 2198359692.

The previous prime is 2198359661. The next prime is 2198359721. The reversal of 2198359693 is 3969538912.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1178068329 + 1020291364 = 34323^2 + 31942^2 .

It is a cyclic number.

It is not a de Polignac number, because 2198359693 - 2⁵ = 2198359661 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2198359193) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1099179846 + 1099179847.

It is an arithmetic number, because the mean of its divisors is an integer number (1099179847).

Almost surely, 2^2198359693 is an apocalyptic number.

It is an amenable number.

2198359693 is a deficient number, since it is larger than the sum of its proper divisors (1).

2198359693 is an equidigital number, since it uses as much as digits as its factorization.

2198359693 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3149280, while the sum is 55.

The square root of 2198359693 is about 46886.6686063320. The cubic root of 2198359693 is about 1300.2681287176.

The spelling of 2198359693 in words is "two billion, one hundred ninety-eight million, three hundred fifty-nine thousand, six hundred ninety-three".