111754484209 has 3 divisors (see below), whose sum is σ = 111754818507. Its totient is φ = 111754149912.

The previous prime is 111754484197. The next prime is 111754484243. The reversal of 111754484209 is 902484457111.

The square root of 111754484209 is 334297.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in only one way, i.e., 63033634225 + 48720849984 = 251065^2 + 220728^2 .

It is a de Polignac number, because none of the positive numbers 2^k-111754484209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111754484299) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 167149 + ... + 501445.

It is an arithmetic number, because the mean of its divisors is an integer number (37251606169).

Almost surely, 2^111754484209 is an apocalyptic number.

111754484209 is the 334297-th square number.

111754484209 is the 167149-th centered octagonal number.

It is an amenable number.

111754484209 is a deficient number, since it is larger than the sum of its proper divisors (334298).

111754484209 is an frugal number, since it uses more digits than its factorization.

111754484209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 668594 (or 334297 counting only the distinct ones).

The product of its (nonzero) digits is 322560, while the sum is 46.

The spelling of 111754484209 in words is "one hundred eleven billion, seven hundred fifty-four million, four hundred eighty-four thousand, two hundred nine".