1540152563 has 2 divisors, whose sum is σ = 1540152564. Its totient is φ = 1540152562.

The previous prime is 1540152557. The next prime is 1540152569. The reversal of 1540152563 is 3652510451.

It is a balanced prime because it is at equal distance from previous prime (1540152557) and next prime (1540152569).

It is an emirp because it is prime and its reverse (3652510451) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1540152563 - 2¹⁸ = 1539890419 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (1540152569) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 770076281 + 770076282.

It is an arithmetic number, because the mean of its divisors is an integer number (770076282).

Almost surely, 2^1540152563 is an apocalyptic number.

1540152563 is a deficient number, since it is larger than the sum of its proper divisors (1).

1540152563 is an equidigital number, since it uses as much as digits as its factorization.

1540152563 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18000, while the sum is 32.

The square root of 1540152563 is about 39244.7775251689. Note that the first 3 decimals coincide. The cubic root of 1540152563 is about 1154.8384831894.

The spelling of 1540152563 in words is "one billion, five hundred forty million, one hundred fifty-two thousand, five hundred sixty-three".