1818232416 has 864 divisors, whose sum is σ = 7623147168. Its totient is φ = 402554880.

The previous prime is 1818232391. The next prime is 1818232439. The reversal of 1818232416 is 6142328181.

1818232416 is a `hidden beast` number, since 1 + 8 + 1 + 8 + 232 + 416 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 34306246 + ... + 34306298.

It is an arithmetic number, because the mean of its divisors is an integer number (8823087).

Almost surely, 2^1818232416 is an apocalyptic number.

1818232416 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1818232416, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3811573584).

1818232416 is an abundant number, since it is smaller than the sum of its proper divisors (5804914752).

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

1818232416 is a wasteful number, since it uses less digits than its factorization.

1818232416 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124 (or 106 counting only the distinct ones).

The product of its digits is 18432, while the sum is 36.

The square root of 1818232416 is about 42640.7365790039. The cubic root of 1818232416 is about 1220.5337662569.

The spelling of 1818232416 in words is "one billion, eight hundred eighteen million, two hundred thirty-two thousand, four hundred sixteen".