1816374 has 32 divisors (see below), whose sum is σ = 4227840. Its totient is φ = 509472.

The previous prime is 1816337. The next prime is 1816387. The reversal of 1816374 is 4736181.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2112 + ... + 2844.

It is an arithmetic number, because the mean of its divisors is an integer number (132120).

2^1816374 is an apocalyptic number.

1816374 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1816374, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2113920).

1816374 is an abundant number, since it is smaller than the sum of its proper divisors (2411466).

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

1816374 is a wasteful number, since it uses less digits than its factorization.

1816374 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 804.

The product of its digits is 4032, while the sum is 30.

The square root of 1816374 is about 1347.7292012864. The cubic root of 1816374 is about 122.0117788502.

It can be divided in two parts, 181 and 6374, that added together give a triangular number (6555 = T₁₁₄).

The spelling of 1816374 in words is "one million, eight hundred sixteen thousand, three hundred seventy-four".