18873875237 has 4 divisors (see below), whose sum is σ = 21570143136. Its totient is φ = 16177607340.

The previous prime is 18873875203. The next prime is 18873875263. The reversal of 18873875237 is 73257837881.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 18873875237 - 2¹⁴ = 18873858853 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 (18873875287) 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, 1348133939 + ... + 1348133952.

It is an arithmetic number, because the mean of its divisors is an integer number (5392535784).

Almost surely, 2^18873875237 is an apocalyptic number.

It is an amenable number.

18873875237 is a deficient number, since it is larger than the sum of its proper divisors (2696267899).

18873875237 is an equidigital number, since it uses as much as digits as its factorization.

18873875237 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2696267898.

The product of its digits is 15805440, while the sum is 59.

The spelling of 18873875237 in words is "eighteen billion, eight hundred seventy-three million, eight hundred seventy-five thousand, two hundred thirty-seven".