1768085457 has 4 divisors (see below), whose sum is σ = 2357447280. Its totient is φ = 1178723636.

The previous prime is 1768085453. The next prime is 1768085461. The reversal of 1768085457 is 7545808671.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (1768085453) and next prime (1768085461).

It is a cyclic number.

It is not a de Polignac number, because 1768085457 - 2² = 1768085453 is a prime.

It is a super-2 number, since 2×1768085457² = 6252252366509797698, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1768085453) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 294680907 + ... + 294680912.

It is an arithmetic number, because the mean of its divisors is an integer number (589361820).

Almost surely, 2^1768085457 is an apocalyptic number.

It is an amenable number.

1768085457 is a deficient number, since it is larger than the sum of its proper divisors (589361823).

1768085457 is an equidigital number, since it uses as much as digits as its factorization.

1768085457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 589361822.

The product of its (nonzero) digits is 1881600, while the sum is 51.

The square root of 1768085457 is about 42048.6082647214. The cubic root of 1768085457 is about 1209.2082010983.

The spelling of 1768085457 in words is "one billion, seven hundred sixty-eight million, eighty-five thousand, four hundred fifty-seven".