18746453846 has 4 divisors (see below), whose sum is σ = 28119680772. Its totient is φ = 9373226922.

The previous prime is 18746453839. The next prime is 18746453861. The reversal of 18746453846 is 64835464781.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 64835464781 = 719 ⋅90174499.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 18746453791 and 18746453800.

It is a congruent number.

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 as a sum of consecutive naturals, namely, 4686613460 + ... + 4686613463.

It is an arithmetic number, because the mean of its divisors is an integer number (7029920193).

Almost surely, 2^18746453846 is an apocalyptic number.

18746453846 is a deficient number, since it is larger than the sum of its proper divisors (9373226926).

18746453846 is an equidigital number, since it uses as much as digits as its factorization.

18746453846 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9373226925.

The product of its digits is 15482880, while the sum is 56.

The spelling of 18746453846 in words is "eighteen billion, seven hundred forty-six million, four hundred fifty-three thousand, eight hundred forty-six".