18384007 has 2 divisors, whose sum is σ = 18384008. Its totient is φ = 18384006.

The previous prime is 18383977. The next prime is 18384043. The reversal of 18384007 is 70048381.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18384007 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 18384007.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18384307) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9192003 + 9192004.

It is an arithmetic number, because the mean of its divisors is an integer number (9192004).

Almost surely, 2^18384007 is an apocalyptic number.

18384007 is a deficient number, since it is larger than the sum of its proper divisors (1).

18384007 is an equidigital number, since it uses as much as digits as its factorization.

18384007 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5376, while the sum is 31.

The square root of 18384007 is about 4287.6575189723. The cubic root of 18384007 is about 263.9247135720.

The spelling of 18384007 in words is "eighteen million, three hundred eighty-four thousand, seven".