2198049605 has 4 divisors (see below), whose sum is σ = 2637659532. Its totient is φ = 1758439680.

The previous prime is 2198049593. The next prime is 2198049613. The reversal of 2198049605 is 5069408912.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1039804516 + 1158245089 = 32246^2 + 34033^2 .

It is not a de Polignac number, because 2198049605 - 2⁶ = 2198049541 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 219804956 + ... + 219804965.

It is an arithmetic number, because the mean of its divisors is an integer number (659414883).

Almost surely, 2^2198049605 is an apocalyptic number.

It is an amenable number.

2198049605 is a deficient number, since it is larger than the sum of its proper divisors (439609927).

2198049605 is an equidigital number, since it uses as much as digits as its factorization.

2198049605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 439609926.

The product of its (nonzero) digits is 155520, while the sum is 44.

The square root of 2198049605 is about 46883.3617075397. The cubic root of 2198049605 is about 1300.2069897232.

The spelling of 2198049605 in words is "two billion, one hundred ninety-eight million, forty-nine thousand, six hundred five".