111798539 has 2 divisors, whose sum is σ = 111798540. Its totient is φ = 111798538.

The previous prime is 111798523. The next prime is 111798541. The reversal of 111798539 is 935897111.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 111798539 - 2⁴ = 111798523 is a prime.

Together with 111798541, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 111798539.

It is not a weakly prime, because it can be changed into another prime (111798559) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55899269 + 55899270.

It is an arithmetic number, because the mean of its divisors is an integer number (55899270).

Almost surely, 2^111798539 is an apocalyptic number.

111798539 is a deficient number, since it is larger than the sum of its proper divisors (1).

111798539 is an equidigital number, since it uses as much as digits as its factorization.

111798539 is an evil number, because the sum of its binary digits is even.

The product of its digits is 68040, while the sum is 44.

The square root of 111798539 is about 10573.4828226086. The cubic root of 111798539 is about 481.7392617095.

The spelling of 111798539 in words is "one hundred eleven million, seven hundred ninety-eight thousand, five hundred thirty-nine".