2157825682 has 8 divisors (see below), whose sum is σ = 3252079152. Its totient is φ = 1073799300.

The previous prime is 2157825673. The next prime is 2157825689. The reversal of 2157825682 is 2865287512.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (2157825689) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2556244 + ... + 2557087.

It is an arithmetic number, because the mean of its divisors is an integer number (406509894).

Almost surely, 2^2157825682 is an apocalyptic number.

2157825682 is a deficient number, since it is larger than the sum of its proper divisors (1094253470).

2157825682 is a wasteful number, since it uses less digits than its factorization.

2157825682 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5113544.

The product of its digits is 537600, while the sum is 46.

The square root of 2157825682 is about 46452.4023275438. The cubic root of 2157825682 is about 1292.2269252384.

The spelling of 2157825682 in words is "two billion, one hundred fifty-seven million, eight hundred twenty-five thousand, six hundred eighty-two".