18486378435 has 32 divisors (see below), whose sum is σ = 33809398272. Its totient is φ = 8449482240.

The previous prime is 18486378401. The next prime is 18486378479. The reversal of 18486378435 is 53487368481.

It is not a de Polignac number, because 18486378435 - 2⁶ = 18486378371 is a prime.

It is a Smith number, since the sum of its digits (57) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 837612 + ... + 859398.

It is an arithmetic number, because the mean of its divisors is an integer number (1056543696).

Almost surely, 2^18486378435 is an apocalyptic number.

18486378435 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

18486378435 is a deficient number, since it is larger than the sum of its proper divisors (15323019837).

18486378435 is a wasteful number, since it uses less digits than its factorization.

18486378435 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29883.

The product of its digits is 15482880, while the sum is 57.

The spelling of 18486378435 in words is "eighteen billion, four hundred eighty-six million, three hundred seventy-eight thousand, four hundred thirty-five".