18400004743 has 16 divisors (see below), whose sum is σ = 18604908000. Its totient is φ = 18196776576.

The previous prime is 18400004737. The next prime is 18400004759. The reversal of 18400004743 is 34740000481.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18400004743 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18400004713) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36873508 + ... + 36874006.

It is an arithmetic number, because the mean of its divisors is an integer number (1162806750).

Almost surely, 2^18400004743 is an apocalyptic number.

18400004743 is a deficient number, since it is larger than the sum of its proper divisors (204903257).

18400004743 is a wasteful number, since it uses less digits than its factorization.

18400004743 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1506.

The product of its (nonzero) digits is 10752, while the sum is 31.

The spelling of 18400004743 in words is "eighteen billion, four hundred million, four thousand, seven hundred forty-three".