2057818 has 8 divisors (see below), whose sum is σ = 3527712. Its totient is φ = 881916.

The previous prime is 2057813. The next prime is 2057849. The reversal of 2057818 is 8187502.

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

It is a super-2 number, since 2×2057818² = 8469229842248, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2057818.

It is not an unprimeable number, because it can be changed into a prime (2057813) 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 3 ways as a sum of consecutive naturals, for example, 73480 + ... + 73507.

It is an arithmetic number, because the mean of its divisors is an integer number (440964).

2^2057818 is an apocalyptic number.

2057818 is a deficient number, since it is larger than the sum of its proper divisors (1469894).

2057818 is a wasteful number, since it uses less digits than its factorization.

2057818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146996.

The product of its (nonzero) digits is 4480, while the sum is 31.

The square root of 2057818 is about 1434.5096723271. The cubic root of 2057818 is about 127.1946917738.

The spelling of 2057818 in words is "two million, fifty-seven thousand, eight hundred eighteen".