2199857238 has 16 divisors (see below), whose sum is σ = 4888571760. Its totient is φ = 733285728.

The previous prime is 2199857197. The next prime is 2199857267. The reversal of 2199857238 is 8327589912.

It is a Harshad number since it is a multiple of its sum of digits (54), and also a Moran number because the ratio is a prime number: 40738097 = 2199857238 / (2 + 1 + 9 + 9 + 8 + 5 + 7 + 2 + 3 + 8).

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, 20368995 + ... + 20369102.

It is an arithmetic number, because the mean of its divisors is an integer number (305535735).

Almost surely, 2^2199857238 is an apocalyptic number.

2199857238 is an abundant number, since it is smaller than the sum of its proper divisors (2688714522).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2199857238 is a wasteful number, since it uses less digits than its factorization.

2199857238 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40738108 (or 40738102 counting only the distinct ones).

The product of its digits is 2177280, while the sum is 54.

The square root of 2199857238 is about 46902.6357255112. The cubic root of 2199857238 is about 1300.5633136616.

The spelling of 2199857238 in words is "two billion, one hundred ninety-nine million, eight hundred fifty-seven thousand, two hundred thirty-eight".