18412874605 has 4 divisors (see below), whose sum is σ = 22095449532. Its totient is φ = 14730299680.

The previous prime is 18412874603. The next prime is 18412874651. The reversal of 18412874605 is 50647821481.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 50647821481 = 47 ⋅1077613223.

It can be written as a sum of positive squares in 2 ways, for example, as 9367723369 + 9045151236 = 96787^2 + 95106^2 .

It is not a de Polignac number, because 18412874605 - 2¹ = 18412874603 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18412874603) 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 in 3 ways as a sum of consecutive naturals, for example, 1841287456 + ... + 1841287465.

It is an arithmetic number, because the mean of its divisors is an integer number (5523862383).

Almost surely, 2^18412874605 is an apocalyptic number.

It is an amenable number.

18412874605 is a deficient number, since it is larger than the sum of its proper divisors (3682574927).

18412874605 is an equidigital number, since it uses as much as digits as its factorization.

18412874605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3682574926.

The product of its (nonzero) digits is 430080, while the sum is 46.

The spelling of 18412874605 in words is "eighteen billion, four hundred twelve million, eight hundred seventy-four thousand, six hundred five".