4540431491 has 2 divisors, whose sum is σ = 4540431492. Its totient is φ = 4540431490.

The previous prime is 4540431437. The next prime is 4540431509. The reversal of 4540431491 is 1941340454.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4540431491 is a prime.

It is not a weakly prime, because it can be changed into another prime (4540431391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2270215745 + 2270215746.

It is an arithmetic number, because the mean of its divisors is an integer number (2270215746).

Almost surely, 2^4540431491 is an apocalyptic number.

4540431491 is a deficient number, since it is larger than the sum of its proper divisors (1).

4540431491 is an equidigital number, since it uses as much as digits as its factorization.

4540431491 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 34560, while the sum is 35.

The square root of 4540431491 is about 67382.7239802607. The cubic root of 4540431491 is about 1655.8934021396.

The spelling of 4540431491 in words is "four billion, five hundred forty million, four hundred thirty-one thousand, four hundred ninety-one".