1810422 has 24 divisors (see below), whose sum is σ = 4094064. Its totient is φ = 577104.

The previous prime is 1810421. The next prime is 1810423. The reversal of 1810422 is 2240181.

It is an interprime number because it is at equal distance from previous prime (1810421) and next prime (1810423).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 1810395 and 1810404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1810421) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1773 + ... + 2600.

It is an arithmetic number, because the mean of its divisors is an integer number (170586).

2^1810422 is an apocalyptic number.

1810422 is an abundant number, since it is smaller than the sum of its proper divisors (2283642).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1810422 is a wasteful number, since it uses less digits than its factorization.

1810422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4404 (or 4401 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

The square root of 1810422 is about 1345.5192306318. The cubic root of 1810422 is about 121.8783612485.

It can be divided in two parts, 18 and 10422, that added together give a triangular number (10440 = T₁₄₄).

The spelling of 1810422 in words is "one million, eight hundred ten thousand, four hundred twenty-two".