1456666513 has 2 divisors, whose sum is σ = 1456666514. Its totient is φ = 1456666512.

The previous prime is 1456666511. The next prime is 1456666531. The reversal of 1456666513 is 3156666541.

Together with next prime (1456666531) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1366928784 + 89737729 = 36972^2 + 9473^2 .

It is a cyclic number.

It is not a de Polignac number, because 1456666513 - 2¹ = 1456666511 is a prime.

Together with 1456666511, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 1456666513.

It is not a weakly prime, because it can be changed into another prime (1456666511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 728333256 + 728333257.

It is an arithmetic number, because the mean of its divisors is an integer number (728333257).

Almost surely, 2^1456666513 is an apocalyptic number.

It is an amenable number.

1456666513 is a deficient number, since it is larger than the sum of its proper divisors (1).

1456666513 is an equidigital number, since it uses as much as digits as its factorization.

1456666513 is an evil number, because the sum of its binary digits is even.

The product of its digits is 388800, while the sum is 43.

The square root of 1456666513 is about 38166.3007507932. The cubic root of 1456666513 is about 1133.5831422707.

The spelling of 1456666513 in words is "one billion, four hundred fifty-six million, six hundred sixty-six thousand, five hundred thirteen".