18077731803 has 24 divisors (see below), whose sum is σ = 26196198912. Its totient is φ = 12013146288.

The previous prime is 18077731783. The next prime is 18077731807. The reversal of 18077731803 is 30813777081.

It is not a de Polignac number, because 18077731803 - 2¹⁴ = 18077715419 is a prime.

It is not an unprimeable number, because it can be changed into a prime (18077731807) by changing a digit.

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 in 23 ways as a sum of consecutive naturals, for example, 7107550 + ... + 7110092.

It is an arithmetic number, because the mean of its divisors is an integer number (1091508288).

Almost surely, 2^18077731803 is an apocalyptic number.

18077731803 is a deficient number, since it is larger than the sum of its proper divisors (8118467109).

18077731803 is a wasteful number, since it uses less digits than its factorization.

18077731803 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4775 (or 4772 counting only the distinct ones).

The product of its (nonzero) digits is 197568, while the sum is 45.

The spelling of 18077731803 in words is "eighteen billion, seventy-seven million, seven hundred thirty-one thousand, eight hundred three".