1458440491 has 2 divisors, whose sum is σ = 1458440492. Its totient is φ = 1458440490.

The previous prime is 1458440413. The next prime is 1458440549. The reversal of 1458440491 is 1940448541.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (1940448541) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1458440491 - 2¹⁵ = 1458407723 is a prime.

It is not a weakly prime, because it can be changed into another prime (1458449491) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 729220245 + 729220246.

It is an arithmetic number, because the mean of its divisors is an integer number (729220246).

Almost surely, 2^1458440491 is an apocalyptic number.

1458440491 is a deficient number, since it is larger than the sum of its proper divisors (1).

1458440491 is an equidigital number, since it uses as much as digits as its factorization.

1458440491 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 92160, while the sum is 40.

The square root of 1458440491 is about 38189.5337887228. The cubic root of 1458440491 is about 1134.0431276218.

The spelling of 1458440491 in words is "one billion, four hundred fifty-eight million, four hundred forty thousand, four hundred ninety-one".