18783429228 has 120 divisors (see below), whose sum is σ = 51408617568. Its totient is φ = 5969044224.

The previous prime is 18783429193. The next prime is 18783429271. The reversal of 18783429228 is 82292438781.

18783429228 is a `hidden beast` number, since 1 + 8 + 78 + 342 + 9 + 228 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 2328450 + ... + 2336502.

Almost surely, 2^18783429228 is an apocalyptic number.

18783429228 is a gapful number since it is divisible by the number (18) 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 18783429228, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25704308784).

18783429228 is an abundant number, since it is smaller than the sum of its proper divisors (32625188340).

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

18783429228 is a wasteful number, since it uses less digits than its factorization.

18783429228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8405 (or 8394 counting only the distinct ones).

The product of its digits is 3096576, while the sum is 54.

The spelling of 18783429228 in words is "eighteen billion, seven hundred eighty-three million, four hundred twenty-nine thousand, two hundred twenty-eight".