18742053826787 has 4 divisors (see below), whose sum is σ = 18745248319416. Its totient is φ = 18738859334160.

The previous prime is 18742053826781. The next prime is 18742053826819. The reversal of 18742053826787 is 78762835024781.

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

It is a cyclic number.

It is not a de Polignac number, because 18742053826787 - 2¹⁶ = 18742053761251 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18742053826781) 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, 1597237514 + ... + 1597249247.

It is an arithmetic number, because the mean of its divisors is an integer number (4686312079854).

Almost surely, 2^{18742053826787} is an apocalyptic number.

18742053826787 is a deficient number, since it is larger than the sum of its proper divisors (3194492629).

18742053826787 is an equidigital number, since it uses as much as digits as its factorization.

18742053826787 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3194492628.

The product of its (nonzero) digits is 252887040, while the sum is 68.

The spelling of 18742053826787 in words is "eighteen trillion, seven hundred forty-two billion, fifty-three million, eight hundred twenty-six thousand, seven hundred eighty-seven".