2198617405 has 8 divisors (see below), whose sum is σ = 2638601784. Its totient is φ = 1758720000.

The previous prime is 2198617387. The next prime is 2198617411. The reversal of 2198617405 is 5047168912.

It can be written as a sum of positive squares in 4 ways, for example, as 1156748121 + 1041869284 = 34011^2 + 32278^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2198617405 - 2²⁵ = 2165062973 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 7 ways as a sum of consecutive naturals, for example, 66265 + ... + 93745.

It is an arithmetic number, because the mean of its divisors is an integer number (329825223).

Almost surely, 2^2198617405 is an apocalyptic number.

It is an amenable number.

2198617405 is a deficient number, since it is larger than the sum of its proper divisors (439984379).

2198617405 is a wasteful number, since it uses less digits than its factorization.

2198617405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43487.

The product of its (nonzero) digits is 120960, while the sum is 43.

The square root of 2198617405 is about 46889.4167696720. The cubic root of 2198617405 is about 1300.3189365399.

The spelling of 2198617405 in words is "two billion, one hundred ninety-eight million, six hundred seventeen thousand, four hundred five".