18737383783087 has 4 divisors (see below), whose sum is σ = 18737467422520. Its totient is φ = 18737300143656.

The previous prime is 18737383783043. The next prime is 18737383783091. The reversal of 18737383783087 is 78038738373781.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18737383783087 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 (18737383783787) 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, 41482773 + ... + 41932030.

It is an arithmetic number, because the mean of its divisors is an integer number (4684366855630).

Almost surely, 2^{18737383783087} is an apocalyptic number.

18737383783087 is a deficient number, since it is larger than the sum of its proper divisors (83639433).

18737383783087 is an equidigital number, since it uses as much as digits as its factorization.

18737383783087 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83639432.

The product of its (nonzero) digits is 796594176, while the sum is 73.

The spelling of 18737383783087 in words is "eighteen trillion, seven hundred thirty-seven billion, three hundred eighty-three million, seven hundred eighty-three thousand, eighty-seven".