18076449403 has 4 divisors (see below), whose sum is σ = 18146786040. Its totient is φ = 18006112768.

The previous prime is 18076449383. The next prime is 18076449437. The reversal of 18076449403 is 30494467081.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18076449403 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18076449203) 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, 35167933 + ... + 35168446.

It is an arithmetic number, because the mean of its divisors is an integer number (4536696510).

Almost surely, 2^18076449403 is an apocalyptic number.

18076449403 is a deficient number, since it is larger than the sum of its proper divisors (70336637).

18076449403 is an equidigital number, since it uses as much as digits as its factorization.

18076449403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70336636.

The product of its (nonzero) digits is 580608, while the sum is 46.

The spelling of 18076449403 in words is "eighteen billion, seventy-six million, four hundred forty-nine thousand, four hundred three".