18193290043 has 4 divisors (see below), whose sum is σ = 18194222520. Its totient is φ = 18192357568.

The previous prime is 18193289999. The next prime is 18193290097. The reversal of 18193290043 is 34009239181.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 18193290043 - 2¹³ = 18193281851 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 18193289978 and 18193290005.

It is not an unprimeable number, because it can be changed into a prime (18193210043) 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, 436333 + ... + 476206.

It is an arithmetic number, because the mean of its divisors is an integer number (4548555630).

Almost surely, 2^18193290043 is an apocalyptic number.

18193290043 is a deficient number, since it is larger than the sum of its proper divisors (932477).

18193290043 is an equidigital number, since it uses as much as digits as its factorization.

18193290043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 932476.

The product of its (nonzero) digits is 46656, while the sum is 40.

The spelling of 18193290043 in words is "eighteen billion, one hundred ninety-three million, two hundred ninety thousand, forty-three".