18373801 has 2 divisors, whose sum is σ = 18373802. Its totient is φ = 18373800.

The previous prime is 18373769. The next prime is 18373807. The reversal of 18373801 is 10837381.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9517225 + 8856576 = 3085^2 + 2976^2 .

It is a cyclic number.

It is not a de Polignac number, because 18373801 - 2⁵ = 18373769 is a prime.

It is not a weakly prime, because it can be changed into another prime (18373807) 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 as a sum of consecutive naturals, namely, 9186900 + 9186901.

It is an arithmetic number, because the mean of its divisors is an integer number (9186901).

Almost surely, 2^18373801 is an apocalyptic number.

It is an amenable number.

18373801 is a deficient number, since it is larger than the sum of its proper divisors (1).

18373801 is an equidigital number, since it uses as much as digits as its factorization.

18373801 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4032, while the sum is 31.

The square root of 18373801 is about 4286.4671933890. The cubic root of 18373801 is about 263.8758646959.

It can be divided in two parts, 1837380 and 1, that added together give a palindrome (1837381).

The spelling of 18373801 in words is "eighteen million, three hundred seventy-three thousand, eight hundred one".