18877878943 has 8 divisors (see below), whose sum is σ = 23536056960. Its totient is φ = 14710035480.

The previous prime is 18877878941. The next prime is 18877878959. The reversal of 18877878943 is 34987877881.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 18877878943 - 2¹ = 18877878941 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 (18877878941) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 122583553 + ... + 122583706.

It is an arithmetic number, because the mean of its divisors is an integer number (2942007120).

Almost surely, 2^18877878943 is an apocalyptic number.

18877878943 is a deficient number, since it is larger than the sum of its proper divisors (4658178017).

18877878943 is a wasteful number, since it uses less digits than its factorization.

18877878943 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 245167277.

The product of its digits is 151732224, while the sum is 70.

The spelling of 18877878943 in words is "eighteen billion, eight hundred seventy-seven million, eight hundred seventy-eight thousand, nine hundred forty-three".