1540345171 has 2 divisors, whose sum is σ = 1540345172. Its totient is φ = 1540345170.

The previous prime is 1540345133. The next prime is 1540345189. The reversal of 1540345171 is 1715430451.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1540345171 - 2⁷ = 1540345043 is a prime.

It is not a weakly prime, because it can be changed into another prime (1540345271) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 770172585 + 770172586.

It is an arithmetic number, because the mean of its divisors is an integer number (770172586).

Almost surely, 2^1540345171 is an apocalyptic number.

1540345171 is a deficient number, since it is larger than the sum of its proper divisors (1).

1540345171 is an equidigital number, since it uses as much as digits as its factorization.

1540345171 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8400, while the sum is 31.

The square root of 1540345171 is about 39247.2313800604. The cubic root of 1540345171 is about 1154.8866216800.

The spelling of 1540345171 in words is "one billion, five hundred forty million, three hundred forty-five thousand, one hundred seventy-one".