11938645878 has 8 divisors (see below), whose sum is σ = 23877291768. Its totient is φ = 3979548624.

The previous prime is 11938645867. The next prime is 11938645889. The reversal of 11938645878 is 87854683911.

It is an interprime number because it is at equal distance from previous prime (11938645867) and next prime (11938645889).

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

11938645878 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 994887151 + ... + 994887162.

It is an arithmetic number, because the mean of its divisors is an integer number (2984661471).

Almost surely, 2^11938645878 is an apocalyptic number.

11938645878 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11938645878 is a wasteful number, since it uses less digits than its factorization.

11938645878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1989774318.

The product of its digits is 11612160, while the sum is 60.

The spelling of 11938645878 in words is "eleven billion, nine hundred thirty-eight million, six hundred forty-five thousand, eight hundred seventy-eight".