18724093846 has 4 divisors (see below), whose sum is σ = 28086140772. Its totient is φ = 9362046922.

The previous prime is 18724093831. The next prime is 18724093847. The reversal of 18724093846 is 64839042781.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 18724093793 and 18724093802.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18724093847) 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 as a sum of consecutive naturals, namely, 4681023460 + ... + 4681023463.

It is an arithmetic number, because the mean of its divisors is an integer number (7021535193).

Almost surely, 2^18724093846 is an apocalyptic number.

18724093846 is a deficient number, since it is larger than the sum of its proper divisors (9362046926).

18724093846 is an equidigital number, since it uses as much as digits as its factorization.

18724093846 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9362046925.

The product of its (nonzero) digits is 2322432, while the sum is 52.

The spelling of 18724093846 in words is "eighteen billion, seven hundred twenty-four million, ninety-three thousand, eight hundred forty-six".