1464319993 has 2 divisors, whose sum is σ = 1464319994. Its totient is φ = 1464319992.

The previous prime is 1464319919. The next prime is 1464320017. The reversal of 1464319993 is 3999134641.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1055795049 + 408524944 = 32493^2 + 20212^2 .

It is an emirp because it is prime and its reverse (3999134641) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1464319993 is a prime.

It is not a weakly prime, because it can be changed into another prime (1464319903) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 732159996 + 732159997.

It is an arithmetic number, because the mean of its divisors is an integer number (732159997).

Almost surely, 2^1464319993 is an apocalyptic number.

It is an amenable number.

1464319993 is a deficient number, since it is larger than the sum of its proper divisors (1).

1464319993 is an equidigital number, since it uses as much as digits as its factorization.

1464319993 is an evil number, because the sum of its binary digits is even.

The product of its digits is 629856, while the sum is 49.

The square root of 1464319993 is about 38266.4342864605. The cubic root of 1464319993 is about 1135.5649972815.

The spelling of 1464319993 in words is "one billion, four hundred sixty-four million, three hundred nineteen thousand, nine hundred ninety-three".