1819116 has 72 divisors (see below), whose sum is σ = 5197920. Its totient is φ = 535392.

The previous prime is 1819109. The next prime is 1819123. The reversal of 1819116 is 6119181.

1819116 = T₃₆₁ + T₃₆₂ + ... + T₃₈₆.

It is an interprime number because it is at equal distance from previous prime (1819109) and next prime (1819123).

It is a Smith number, since the sum of its digits (27) coincides with the sum of the digits of its prime factors.

Its product of digits (432) is a multiple of the sum of its prime factors (72).

It is a self number, because there is not a number n which added to its sum of digits gives 1819116.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 79081 + ... + 79103.

2^1819116 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1819116, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2598960).

1819116 is an abundant number, since it is smaller than the sum of its proper divisors (3378804).

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

1819116 is a wasteful number, since it uses less digits than its factorization.

1819116 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72 (or 41 counting only the distinct ones).

The product of its digits is 432, while the sum is 27.

The square root of 1819116 is about 1348.7460843317. The cubic root of 1819116 is about 122.0731443490.

The spelling of 1819116 in words is "one million, eight hundred nineteen thousand, one hundred sixteen".