2157282494 has 16 divisors (see below), whose sum is σ = 3261189600. Its totient is φ = 1070235360.

The previous prime is 2157282487. The next prime is 2157282497. The reversal of 2157282494 is 4942827512.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2157282497) 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, 312767 + ... + 319589.

It is an arithmetic number, because the mean of its divisors is an integer number (203824350).

Almost surely, 2^2157282494 is an apocalyptic number.

2157282494 is a deficient number, since it is larger than the sum of its proper divisors (1103907106).

2157282494 is a wasteful number, since it uses less digits than its factorization.

2157282494 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8035.

The product of its digits is 322560, while the sum is 44.

The square root of 2157282494 is about 46446.5552436346. Note that the first 3 decimals coincide. The cubic root of 2157282494 is about 1292.1184856687.

The spelling of 2157282494 in words is "two billion, one hundred fifty-seven million, two hundred eighty-two thousand, four hundred ninety-four".