1454241991 has 2 divisors, whose sum is σ = 1454241992. Its totient is φ = 1454241990.

The previous prime is 1454241989. The next prime is 1454242001. The reversal of 1454241991 is 1991424541.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1454241991 - 2¹ = 1454241989 is a prime.

It is a super-2 number, since 2×1454241991² = 4229639536775288162, which contains 22 as substring.

Together with 1454241989, 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 (1454241791) 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, 727120995 + 727120996.

It is an arithmetic number, because the mean of its divisors is an integer number (727120996).

Almost surely, 2^1454241991 is an apocalyptic number.

1454241991 is a deficient number, since it is larger than the sum of its proper divisors (1).

1454241991 is an equidigital number, since it uses as much as digits as its factorization.

1454241991 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 51840, while the sum is 40.

The square root of 1454241991 is about 38134.5249216507. The cubic root of 1454241991 is about 1132.9538690879.

The spelling of 1454241991 in words is "one billion, four hundred fifty-four million, two hundred forty-one thousand, nine hundred ninety-one".