2181250799 has 32 divisors (see below), whose sum is σ = 2838958080. Its totient is φ = 1629331200.

The previous prime is 2181250699. The next prime is 2181250801. The reversal of 2181250799 is 9970521812.

It is a happy number.

2181250799 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2181250799 - 2²⁸ = 1912815343 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2181250499) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 106232 + ... + 125090.

It is an arithmetic number, because the mean of its divisors is an integer number (88717440).

Almost surely, 2^2181250799 is an apocalyptic number.

2181250799 is a deficient number, since it is larger than the sum of its proper divisors (657707281).

2181250799 is a wasteful number, since it uses less digits than its factorization.

2181250799 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18951.

The product of its (nonzero) digits is 90720, while the sum is 44.

The square root of 2181250799 is about 46703.8627845706. The cubic root of 2181250799 is about 1296.8861963858.

The spelling of 2181250799 in words is "two billion, one hundred eighty-one million, two hundred fifty thousand, seven hundred ninety-nine".