2158803198 has 16 divisors (see below), whose sum is σ = 4797340560. Its totient is φ = 719601048.

The previous prime is 2158803193. The next prime is 2158803271. The reversal of 2158803198 is 8913088512.

It is a happy number.

2158803198 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2158803193) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19988865 + ... + 19988972.

It is an arithmetic number, because the mean of its divisors is an integer number (299833785).

Almost surely, 2^2158803198 is an apocalyptic number.

2158803198 is an abundant number, since it is smaller than the sum of its proper divisors (2638537362).

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

2158803198 is a wasteful number, since it uses less digits than its factorization.

2158803198 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39977848 (or 39977842 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 45.

The square root of 2158803198 is about 46462.9228310058. The cubic root of 2158803198 is about 1292.4220262314.

The spelling of 2158803198 in words is "two billion, one hundred fifty-eight million, eight hundred three thousand, one hundred ninety-eight".