1540745159 has 2 divisors, whose sum is σ = 1540745160. Its totient is φ = 1540745158.

The previous prime is 1540745149. The next prime is 1540745161. The reversal of 1540745159 is 9515470451.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (9515470451) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1540745159 - 2²⁰ = 1539696583 is a prime.

Together with 1540745161, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1540745149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 770372579 + 770372580.

It is an arithmetic number, because the mean of its divisors is an integer number (770372580).

Almost surely, 2^1540745159 is an apocalyptic number.

1540745159 is a deficient number, since it is larger than the sum of its proper divisors (1).

1540745159 is an equidigital number, since it uses as much as digits as its factorization.

1540745159 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 126000, while the sum is 41.

The square root of 1540745159 is about 39252.3267972741. The cubic root of 1540745159 is about 1154.9865778067.

The spelling of 1540745159 in words is "one billion, five hundred forty million, seven hundred forty-five thousand, one hundred fifty-nine".