111418387 has 4 divisors (see below), whose sum is σ = 113081416. Its totient is φ = 109755360.

The previous prime is 111418379. The next prime is 111418403. The reversal of 111418387 is 783814111.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 111418387 - 2³ = 111418379 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111418327) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 831414 + ... + 831547.

It is an arithmetic number, because the mean of its divisors is an integer number (28270354).

Almost surely, 2^111418387 is an apocalyptic number.

111418387 is a deficient number, since it is larger than the sum of its proper divisors (1663029).

111418387 is an equidigital number, since it uses as much as digits as its factorization.

111418387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1663028.

The product of its digits is 5376, while the sum is 34.

The square root of 111418387 is about 10555.4908460005. The cubic root of 111418387 is about 481.1926173893.

The spelling of 111418387 in words is "one hundred eleven million, four hundred eighteen thousand, three hundred eighty-seven".