2198456305 has 8 divisors (see below), whose sum is σ = 2638899432. Its totient is φ = 1758263808.

The previous prime is 2198456261. The next prime is 2198456317. The reversal of 2198456305 is 5036548912.

It can be written as a sum of positive squares in 4 ways, for example, as 65536 + 2198390769 = 256^2 + 46887^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 2198456305 - 2⁷ = 2198456177 is a prime.

It is a Duffinian 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, 42784 + ... + 78913.

It is an arithmetic number, because the mean of its divisors is an integer number (329862429).

Almost surely, 2^2198456305 is an apocalyptic number.

It is an amenable number.

2198456305 is a deficient number, since it is larger than the sum of its proper divisors (440443127).

2198456305 is a wasteful number, since it uses less digits than its factorization.

2198456305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125315.

The product of its (nonzero) digits is 259200, while the sum is 43.

The square root of 2198456305 is about 46887.6988665471. The cubic root of 2198456305 is about 1300.2871762017.

The spelling of 2198456305 in words is "two billion, one hundred ninety-eight million, four hundred fifty-six thousand, three hundred five".