1816894 has 16 divisors (see below), whose sum is σ = 2898000. Its totient is φ = 851904.

The previous prime is 1816861. The next prime is 1816901. The reversal of 1816894 is 4986181.

It is a happy number.

It is a super-2 number, since 2×1816894² = 6602207614472, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5032 + ... + 5380.

It is an arithmetic number, because the mean of its divisors is an integer number (181125).

2^1816894 is an apocalyptic number.

1816894 is a deficient number, since it is larger than the sum of its proper divisors (1081106).

1816894 is a wasteful number, since it uses less digits than its factorization.

1816894 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 507.

The product of its digits is 13824, while the sum is 37.

The square root of 1816894 is about 1347.9221045743. The cubic root of 1816894 is about 122.0234211059.

The spelling of 1816894 in words is "one million, eight hundred sixteen thousand, eight hundred ninety-four".