2145791800 has 24 divisors (see below), whose sum is σ = 4988966400. Its totient is φ = 858316640.

The previous prime is 2145791783. The next prime is 2145791849. The reversal of 2145791800 is 81975412.

It is a self number, because there is not a number n which added to its sum of digits gives 2145791800.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5364280 + ... + 5364679.

It is an arithmetic number, because the mean of its divisors is an integer number (207873600).

Almost surely, 2^2145791800 is an apocalyptic number.

2145791800 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2145791800 is an abundant number, since it is smaller than the sum of its proper divisors (2843174600).

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

2145791800 is a wasteful number, since it uses less digits than its factorization.

2145791800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10728975 (or 10728966 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 37.

The square root of 2145791800 is about 46322.6920633937. The cubic root of 2145791800 is about 1289.8202581931.

The spelling of 2145791800 in words is "two billion, one hundred forty-five million, seven hundred ninety-one thousand, eight hundred".