18841442859 has 16 divisors (see below), whose sum is σ = 27918253440. Its totient is φ = 12558709800.

The previous prime is 18841442833. The next prime is 18841442881. The reversal of 18841442859 is 95824414881.

18841442859 is a `hidden beast` number, since 1 + 88 + 41 + 442 + 85 + 9 = 666.

It is not a de Polignac number, because 18841442859 - 2⁸ = 18841442603 is a prime.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (18841442959) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 98344 + ... + 217610.

It is an arithmetic number, because the mean of its divisors is an integer number (1744890840).

Almost surely, 2^18841442859 is an apocalyptic number.

18841442859 is a deficient number, since it is larger than the sum of its proper divisors (9076810581).

18841442859 is a wasteful number, since it uses less digits than its factorization.

18841442859 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125127 (or 125121 counting only the distinct ones).

The product of its digits is 2949120, while the sum is 54.

The spelling of 18841442859 in words is "eighteen billion, eight hundred forty-one million, four hundred forty-two thousand, eight hundred fifty-nine".