111438853 has 2 divisors, whose sum is σ = 111438854. Its totient is φ = 111438852.

The previous prime is 111438797. The next prime is 111438863. The reversal of 111438853 is 358834111.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 83210884 + 28227969 = 9122^2 + 5313^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-111438853 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111438863) 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 as a sum of consecutive naturals, namely, 55719426 + 55719427.

It is an arithmetic number, because the mean of its divisors is an integer number (55719427).

Almost surely, 2^111438853 is an apocalyptic number.

It is an amenable number.

111438853 is a deficient number, since it is larger than the sum of its proper divisors (1).

111438853 is an equidigital number, since it uses as much as digits as its factorization.

111438853 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11520, while the sum is 34.

The square root of 111438853 is about 10556.4602495344. The cubic root of 111438853 is about 481.2220783711. Note that the first 3 decimals are identical.

The spelling of 111438853 in words is "one hundred eleven million, four hundred thirty-eight thousand, eight hundred fifty-three".