1146660509 has 2 divisors, whose sum is σ = 1146660510. Its totient is φ = 1146660508.

The previous prime is 1146660499. The next prime is 1146660527. The reversal of 1146660509 is 9050666411.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 617522500 + 529138009 = 24850^2 + 23003^2 .

It is a cyclic number.

It is not a de Polignac number, because 1146660509 - 2²⁸ = 878225053 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1146660709) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 573330254 + 573330255.

It is an arithmetic number, because the mean of its divisors is an integer number (573330255).

Almost surely, 2^1146660509 is an apocalyptic number.

It is an amenable number.

1146660509 is a deficient number, since it is larger than the sum of its proper divisors (1).

1146660509 is an equidigital number, since it uses as much as digits as its factorization.

1146660509 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 38880, while the sum is 38.

The square root of 1146660509 is about 33862.3760093706. The cubic root of 1146660509 is about 1046.6744395522.

The spelling of 1146660509 in words is "one billion, one hundred forty-six million, six hundred sixty thousand, five hundred nine".