18301007 has 4 divisors (see below), whose sum is σ = 18327816. Its totient is φ = 18274200.

The previous prime is 18300949. The next prime is 18301021. The reversal of 18301007 is 70010381.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 70010381 = 7 ⋅10001483.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18301007 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 18301007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18301057) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12353 + ... + 13754.

It is an arithmetic number, because the mean of its divisors is an integer number (4581954).

Almost surely, 2^18301007 is an apocalyptic number.

18301007 is a deficient number, since it is larger than the sum of its proper divisors (26809).

18301007 is an equidigital number, since it uses as much as digits as its factorization.

18301007 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26808.

The product of its (nonzero) digits is 168, while the sum is 20.

The square root of 18301007 is about 4277.9676249359. The cubic root of 18301007 is about 263.5269257771.

Adding to 18301007 its reverse (70010381), we get a palindrome (88311388).

The spelling of 18301007 in words is "eighteen million, three hundred one thousand, seven".