18783492 has 96 divisors (see below), whose sum is σ = 54792192. Its totient is φ = 4876416.

The previous prime is 18783491. The next prime is 18783497. The reversal of 18783492 is 29438781.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is an alternating number because its digits alternate between odd and even.

It is not an unprimeable number, because it can be changed into a prime (18783491) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 112393 + ... + 112559.

It is an arithmetic number, because the mean of its divisors is an integer number (570752).

Almost surely, 2^18783492 is an apocalyptic number.

18783492 is a gapful number since it is divisible by the number (12) 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 18783492, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27396096).

18783492 is an abundant number, since it is smaller than the sum of its proper divisors (36008700).

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

18783492 is a wasteful number, since it uses less digits than its factorization.

18783492 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 297 (or 295 counting only the distinct ones).

The product of its digits is 96768, while the sum is 42.

The square root of 18783492 is about 4333.9926165142. The cubic root of 18783492 is about 265.8227284766.

The spelling of 18783492 in words is "eighteen million, seven hundred eighty-three thousand, four hundred ninety-two".