18473729103 has 16 divisors (see below), whose sum is σ = 27485958240. Its totient is φ = 12262957632.

The previous prime is 18473729083. The next prime is 18473729129. The reversal of 18473729103 is 30192737481.

18473729103 is a `hidden beast` number, since 1 + 8 + 473 + 72 + 9 + 103 = 666.

It is not a de Polignac number, because 18473729103 - 2⁶ = 18473729039 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18473729003) 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 15 ways as a sum of consecutive naturals, for example, 1461976 + ... + 1474557.

It is an arithmetic number, because the mean of its divisors is an integer number (1717872390).

Almost surely, 2^18473729103 is an apocalyptic number.

18473729103 is a deficient number, since it is larger than the sum of its proper divisors (9012229137).

18473729103 is a wasteful number, since it uses less digits than its factorization.

18473729103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2936775 (or 2936769 counting only the distinct ones).

The product of its (nonzero) digits is 254016, while the sum is 45.

The spelling of 18473729103 in words is "eighteen billion, four hundred seventy-three million, seven hundred twenty-nine thousand, one hundred three".