18476486819 has 4 divisors (see below), whose sum is σ = 21115984944. Its totient is φ = 15836988696.

The previous prime is 18476486761. The next prime is 18476486837. The reversal of 18476486819 is 91868467481.

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

It is a cyclic number.

It is not a de Polignac number, because 18476486819 - 2¹⁶ = 18476421283 is a prime.

It is a super-2 number, since 2×18476486819² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18476486719) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1319749052 + ... + 1319749065.

It is an arithmetic number, because the mean of its divisors is an integer number (5278996236).

Almost surely, 2^18476486819 is an apocalyptic number.

18476486819 is a deficient number, since it is larger than the sum of its proper divisors (2639498125).

18476486819 is an equidigital number, since it uses as much as digits as its factorization.

18476486819 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2639498124.

The product of its digits is 18579456, while the sum is 62.

The spelling of 18476486819 in words is "eighteen billion, four hundred seventy-six million, four hundred eighty-six thousand, eight hundred nineteen".