1290747571 has 2 divisors, whose sum is σ = 1290747572. Its totient is φ = 1290747570.

The previous prime is 1290747541. The next prime is 1290747599. The reversal of 1290747571 is 1757470921.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1290747571 - 2⁷ = 1290747443 is a prime.

It is not a weakly prime, because it can be changed into another prime (1290747541) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 645373785 + 645373786.

It is an arithmetic number, because the mean of its divisors is an integer number (645373786).

Almost surely, 2^1290747571 is an apocalyptic number.

1290747571 is a deficient number, since it is larger than the sum of its proper divisors (1).

1290747571 is an equidigital number, since it uses as much as digits as its factorization.

1290747571 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 123480, while the sum is 43.

The square root of 1290747571 is about 35926.9755337128. The cubic root of 1290747571 is about 1088.7974761133.

The spelling of 1290747571 in words is "one billion, two hundred ninety million, seven hundred forty-seven thousand, five hundred seventy-one".