2158812744 has 32 divisors (see below), whose sum is σ = 5887671840. Its totient is φ = 654185600.

The previous prime is 2158812713. The next prime is 2158812749. The reversal of 2158812744 is 4472188512.

It is a junction number, because it is equal to n+sod(n) for n = 2158812696 and 2158812705.

It is not an unprimeable number, because it can be changed into a prime (2158812749) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4088397 + ... + 4088924.

It is an arithmetic number, because the mean of its divisors is an integer number (183989745).

Almost surely, 2^2158812744 is an apocalyptic number.

2158812744 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

2158812744 is an abundant number, since it is smaller than the sum of its proper divisors (3728859096).

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

2158812744 is a wasteful number, since it uses less digits than its factorization.

2158812744 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8177341 (or 8177337 counting only the distinct ones).

The product of its digits is 143360, while the sum is 42.

The square root of 2158812744 is about 46463.0255579638. The cubic root of 2158812744 is about 1292.4239312132.

The spelling of 2158812744 in words is "two billion, one hundred fifty-eight million, eight hundred twelve thousand, seven hundred forty-four".