111878903 has 2 divisors, whose sum is σ = 111878904. Its totient is φ = 111878902.

The previous prime is 111878881. The next prime is 111878933. The reversal of 111878903 is 309878111.

It is a weak prime.

It is an emirp because it is prime and its reverse (309878111) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 111878903 - 2²⁶ = 44770039 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111878933) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55939451 + 55939452.

It is an arithmetic number, because the mean of its divisors is an integer number (55939452).

Almost surely, 2^111878903 is an apocalyptic number.

111878903 is a deficient number, since it is larger than the sum of its proper divisors (1).

111878903 is an equidigital number, since it uses as much as digits as its factorization.

111878903 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12096, while the sum is 38.

The square root of 111878903 is about 10577.2824014489. The cubic root of 111878903 is about 481.8546634005.

The spelling of 111878903 in words is "one hundred eleven million, eight hundred seventy-eight thousand, nine hundred three".