1141245491 has 2 divisors, whose sum is σ = 1141245492. Its totient is φ = 1141245490.

The previous prime is 1141245481. The next prime is 1141245503. The reversal of 1141245491 is 1945421411.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1141245491 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (1141245481) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 570622745 + 570622746.

It is an arithmetic number, because the mean of its divisors is an integer number (570622746).

Almost surely, 2^1141245491 is an apocalyptic number.

1141245491 is a deficient number, since it is larger than the sum of its proper divisors (1).

1141245491 is an equidigital number, since it uses as much as digits as its factorization.

1141245491 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5760, while the sum is 32.

The square root of 1141245491 is about 33782.3251272022. The cubic root of 1141245491 is about 1045.0242253795.

The spelling of 1141245491 in words is "one billion, one hundred forty-one million, two hundred forty-five thousand, four hundred ninety-one".