2198649601 has 2 divisors, whose sum is σ = 2198649602. Its totient is φ = 2198649600.

The previous prime is 2198649533. The next prime is 2198649617. The reversal of 2198649601 is 1069468912.

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., 1278134001 + 920515600 = 35751^2 + 30340^2 .

It is a cyclic number.

It is not a de Polignac number, because 2198649601 - 2¹⁷ = 2198518529 is a prime.

It is not a weakly prime, because it can be changed into another prime (2198644601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1099324800 + 1099324801.

It is an arithmetic number, because the mean of its divisors is an integer number (1099324801).

Almost surely, 2^2198649601 is an apocalyptic number.

It is an amenable number.

2198649601 is a deficient number, since it is larger than the sum of its proper divisors (1).

2198649601 is an equidigital number, since it uses as much as digits as its factorization.

2198649601 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 186624, while the sum is 46.

The square root of 2198649601 is about 46889.7600868249. The cubic root of 2198649601 is about 1300.3252836901.

The spelling of 2198649601 in words is "two billion, one hundred ninety-eight million, six hundred forty-nine thousand, six hundred one".