1808162 has 8 divisors (see below), whose sum is σ = 2756892. Its totient is φ = 889200.

The previous prime is 1808161. The next prime is 1808167. The reversal of 1808162 is 2618081.

It can be written as a sum of positive squares in 2 ways, for example, as 1615441 + 192721 = 1271^2 + 439^2 .

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 (1808161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7289 + ... + 7532.

2^1808162 is an apocalyptic number.

1808162 is a deficient number, since it is larger than the sum of its proper divisors (948730).

1808162 is a wasteful number, since it uses less digits than its factorization.

1808162 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14884.

The product of its (nonzero) digits is 768, while the sum is 26.

The square root of 1808162 is about 1344.6791438853. The cubic root of 1808162 is about 121.8276254180.

The spelling of 1808162 in words is "one million, eight hundred eight thousand, one hundred sixty-two".