111808453 has 2 divisors, whose sum is σ = 111808454. Its totient is φ = 111808452.

The previous prime is 111808399. The next prime is 111808469. The reversal of 111808453 is 354808111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 83484769 + 28323684 = 9137^2 + 5322^2 .

It is a cyclic number.

It is not a de Polignac number, because 111808453 - 2¹⁷ = 111677381 is a prime.

It is a super-2 number, since 2×111808453² = 25002260324506418, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111808493) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55904226 + 55904227.

It is an arithmetic number, because the mean of its divisors is an integer number (55904227).

Almost surely, 2^111808453 is an apocalyptic number.

It is an amenable number.

111808453 is a deficient number, since it is larger than the sum of its proper divisors (1).

111808453 is an equidigital number, since it uses as much as digits as its factorization.

111808453 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3840, while the sum is 31.

The square root of 111808453 is about 10573.9516265207. The cubic root of 111808453 is about 481.7535010783.

The spelling of 111808453 in words is "one hundred eleven million, eight hundred eight thousand, four hundred fifty-three".