2198195457 has 4 divisors (see below), whose sum is σ = 2930927280. Its totient is φ = 1465463636.

The previous prime is 2198195423. The next prime is 2198195459. The reversal of 2198195457 is 7545918912.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2198195457 - 2⁸ = 2198195201 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2198195459) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 366365907 + ... + 366365912.

It is an arithmetic number, because the mean of its divisors is an integer number (732731820).

Almost surely, 2^2198195457 is an apocalyptic number.

It is an amenable number.

2198195457 is a deficient number, since it is larger than the sum of its proper divisors (732731823).

2198195457 is an equidigital number, since it uses as much as digits as its factorization.

2198195457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 732731822.

The product of its digits is 907200, while the sum is 51.

The square root of 2198195457 is about 46884.9171589329. The cubic root of 2198195457 is about 1300.2357475812.

The spelling of 2198195457 in words is "two billion, one hundred ninety-eight million, one hundred ninety-five thousand, four hundred fifty-seven".