18888959012419 has 4 divisors (see below), whose sum is σ = 18888968105896. Its totient is φ = 18888949918944.

The previous prime is 18888959012411. The next prime is 18888959012461. The reversal of 18888959012419 is 91421095988881.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 18888959012419 - 2³ = 18888959012411 is a prime.

It is a super-2 number, since 2×18888959012419² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18888959012411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 269947 + ... + 6152299.

It is an arithmetic number, because the mean of its divisors is an integer number (4722242026474).

Almost surely, 2^{18888959012419} is an apocalyptic number.

18888959012419 is a deficient number, since it is larger than the sum of its proper divisors (9093477).

18888959012419 is an equidigital number, since it uses as much as digits as its factorization.

18888959012419 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9093476.

The product of its (nonzero) digits is 119439360, while the sum is 73.

The spelling of 18888959012419 in words is "eighteen trillion, eight hundred eighty-eight billion, nine hundred fifty-nine million, twelve thousand, four hundred nineteen".