452118391 has 2 divisors, whose sum is σ = 452118392. Its totient is φ = 452118390.

The previous prime is 452118389. The next prime is 452118409. The reversal of 452118391 is 193811254.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 452118391 - 2¹ = 452118389 is a prime.

It is a super-2 number, since 2×452118391² = 408822078960857762, which contains 22 as substring.

Together with 452118389, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (452118301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 226059195 + 226059196.

It is an arithmetic number, because the mean of its divisors is an integer number (226059196).

Almost surely, 2^452118391 is an apocalyptic number.

452118391 is a deficient number, since it is larger than the sum of its proper divisors (1).

452118391 is an equidigital number, since it uses as much as digits as its factorization.

452118391 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8640, while the sum is 34.

The square root of 452118391 is about 21263.0757652791. The cubic root of 452118391 is about 767.5100267128.

The spelling of 452118391 in words is "four hundred fifty-two million, one hundred eighteen thousand, three hundred ninety-one".