2158695200 has 72 divisors (see below), whose sum is σ = 5311660032. Its totient is φ = 856638720.

The previous prime is 2158695167. The next prime is 2158695221. The reversal of 2158695200 is 25968512.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 90977 + ... + 112223.

It is an arithmetic number, because the mean of its divisors is an integer number (73773056).

Almost surely, 2^2158695200 is an apocalyptic number.

2158695200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2158695200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2655830016).

2158695200 is an abundant number, since it is smaller than the sum of its proper divisors (3152964832).

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

2158695200 is a wasteful number, since it uses less digits than its factorization.

2158695200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21394 (or 21381 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 38.

The square root of 2158695200 is about 46461.7606209666. The cubic root of 2158695200 is about 1292.4004739624.

The spelling of 2158695200 in words is "two billion, one hundred fifty-eight million, six hundred ninety-five thousand, two hundred".