18745373 has 4 divisors (see below), whose sum is σ = 19848060. Its totient is φ = 17642688.

The previous prime is 18745369. The next prime is 18745387. The reversal of 18745373 is 37354781.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 37354781 = 131 ⋅285151.

It can be written as a sum of positive squares in 2 ways, for example, as 17530969 + 1214404 = 4187^2 + 1102^2 .

It is a cyclic number.

It is not a de Polignac number, because 18745373 - 2² = 18745369 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 (18745333) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 551318 + ... + 551351.

It is an arithmetic number, because the mean of its divisors is an integer number (4962015).

Almost surely, 2^18745373 is an apocalyptic number.

It is an amenable number.

18745373 is a deficient number, since it is larger than the sum of its proper divisors (1102687).

18745373 is a wasteful number, since it uses less digits than its factorization.

18745373 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1102686.

The product of its digits is 70560, while the sum is 38.

The square root of 18745373 is about 4329.5927060175. The cubic root of 18745373 is about 265.6427875147.

The spelling of 18745373 in words is "eighteen million, seven hundred forty-five thousand, three hundred seventy-three".