18142473591 has 24 divisors (see below), whose sum is σ = 28731830400. Its totient is φ = 10940173200.

The previous prime is 18142473581. The next prime is 18142473607. The reversal of 18142473591 is 19537424181.

18142473591 is a `hidden beast` number, since 1 + 8 + 14 + 2 + 47 + 3 + 591 = 666.

It is not a de Polignac number, because 18142473591 - 2¹⁸ = 18142211447 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18142473581) 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, 440745 + ... + 480146.

It is an arithmetic number, because the mean of its divisors is an integer number (1197159600).

Almost surely, 2^18142473591 is an apocalyptic number.

18142473591 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

18142473591 is a deficient number, since it is larger than the sum of its proper divisors (10589356809).

18142473591 is a wasteful number, since it uses less digits than its factorization.

18142473591 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 921107 (or 921104 counting only the distinct ones).

The product of its digits is 241920, while the sum is 45.

Adding to 18142473591 its sum of digits (45), we get a square (18142473636 = 134694²).

The spelling of 18142473591 in words is "eighteen billion, one hundred forty-two million, four hundred seventy-three thousand, five hundred ninety-one".