18783943090 has 64 divisors (see below), whose sum is σ = 37426976640. Its totient is φ = 6730813440.

The previous prime is 18783943051. The next prime is 18783943091. The reversal of 18783943090 is 9034938781.

It is not an unprimeable number, because it can be changed into a prime (18783943091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2267476 + ... + 2275744.

It is an arithmetic number, because the mean of its divisors is an integer number (584796510).

Almost surely, 2^18783943090 is an apocalyptic number.

18783943090 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18783943090 is a deficient number, since it is larger than the sum of its proper divisors (18643033550).

18783943090 is a wasteful number, since it uses less digits than its factorization.

18783943090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8587.

The product of its (nonzero) digits is 1306368, while the sum is 52.

The spelling of 18783943090 in words is "eighteen billion, seven hundred eighty-three million, nine hundred forty-three thousand, ninety".