1145664775 has 6 divisors (see below), whose sum is σ = 1420624352. Its totient is φ = 916531800.

The previous prime is 1145664739. The next prime is 1145664803. The reversal of 1145664775 is 5774665411.

It is not a de Polignac number, because 1145664775 - 2¹³ = 1145656583 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 22913271 + ... + 22913320.

Almost surely, 2^1145664775 is an apocalyptic number.

1145664775 is a deficient number, since it is larger than the sum of its proper divisors (274959577).

1145664775 is an equidigital number, since it uses as much as digits as its factorization.

1145664775 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45826601 (or 45826596 counting only the distinct ones).

The product of its digits is 705600, while the sum is 46.

The square root of 1145664775 is about 33847.6701561570. The cubic root of 1145664775 is about 1046.3713823582.

The spelling of 1145664775 in words is "one billion, one hundred forty-five million, six hundred sixty-four thousand, seven hundred seventy-five".