18348373 has 12 divisors (see below), whose sum is σ = 19331724. Its totient is φ = 17409600.

The previous prime is 18348371. The next prime is 18348403. The reversal of 18348373 is 37384381.

It can be written as a sum of positive squares in 2 ways, for example, as 311364 + 18037009 = 558^2 + 4247^2 .

It is not a de Polignac number, because 18348373 - 2¹ = 18348371 is a prime.

It is the 4284-th Hogben number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18348371) by changing a digit.

It is a nontrivial repunit in base 4283.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 58465 + ... + 58777.

It is an arithmetic number, because the mean of its divisors is an integer number (1610977).

Almost surely, 2^18348373 is an apocalyptic number.

It is an amenable number.

18348373 is a deficient number, since it is larger than the sum of its proper divisors (983351).

18348373 is an equidigital number, since it uses as much as digits as its factorization.

18348373 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 436 (or 405 counting only the distinct ones).

The product of its digits is 48384, while the sum is 37.

The square root of 18348373 is about 4283.5000875452. The cubic root of 18348373 is about 263.7540801837.

It can be divided in two parts, 18348 and 373, that added together give a triangular number (18721 = T₁₉₃).

The spelling of 18348373 in words is "eighteen million, three hundred forty-eight thousand, three hundred seventy-three".