18754456705 has 4 divisors (see below), whose sum is σ = 22505348052. Its totient is φ = 15003565360.

The previous prime is 18754456631. The next prime is 18754456727. The reversal of 18754456705 is 50765445781.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 50765445781 = 17 ⋅2986202693.

It can be written as a sum of positive squares in 2 ways, for example, as 11944741264 + 6809715441 = 109292^2 + 82521^2 .

It is not a de Polignac number, because 18754456705 - 2²¹ = 18752359553 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1875445666 + ... + 1875445675.

It is an arithmetic number, because the mean of its divisors is an integer number (5626337013).

Almost surely, 2^18754456705 is an apocalyptic number.

It is an amenable number.

18754456705 is a deficient number, since it is larger than the sum of its proper divisors (3750891347).

18754456705 is an equidigital number, since it uses as much as digits as its factorization.

18754456705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3750891346.

The product of its (nonzero) digits is 4704000, while the sum is 52.

The spelling of 18754456705 in words is "eighteen billion, seven hundred fifty-four million, four hundred fifty-six thousand, seven hundred five".