2198403815 has 4 divisors (see below), whose sum is σ = 2638084584. Its totient is φ = 1758723048.

The previous prime is 2198403811. The next prime is 2198403817. The reversal of 2198403815 is 5183048912.

2198403815 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 2198403815 - 2² = 2198403811 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2198403811) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 219840377 + ... + 219840386.

It is an arithmetic number, because the mean of its divisors is an integer number (659521146).

Almost surely, 2^2198403815 is an apocalyptic number.

2198403815 is a deficient number, since it is larger than the sum of its proper divisors (439680769).

2198403815 is an equidigital number, since it uses as much as digits as its factorization.

2198403815 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 439680768.

The product of its (nonzero) digits is 69120, while the sum is 41.

The square root of 2198403815 is about 46887.1391215118. The cubic root of 2198403815 is about 1300.2768276347.

The spelling of 2198403815 in words is "two billion, one hundred ninety-eight million, four hundred three thousand, eight hundred fifteen".