1445135513 has 2 divisors, whose sum is σ = 1445135514. Its totient is φ = 1445135512.

The previous prime is 1445135501. The next prime is 1445135537. The reversal of 1445135513 is 3155315441.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1163969689 + 281165824 = 34117^2 + 16768^2 .

It is an emirp because it is prime and its reverse (3155315441) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1445135513 - 2⁸ = 1445135257 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1445135513.

It is not a weakly prime, because it can be changed into another prime (1445135113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 722567756 + 722567757.

It is an arithmetic number, because the mean of its divisors is an integer number (722567757).

Almost surely, 2^1445135513 is an apocalyptic number.

It is an amenable number.

1445135513 is a deficient number, since it is larger than the sum of its proper divisors (1).

1445135513 is an equidigital number, since it uses as much as digits as its factorization.

1445135513 is an evil number, because the sum of its binary digits is even.

The product of its digits is 18000, while the sum is 32.

The square root of 1445135513 is about 38014.9380244135. The cubic root of 1445135513 is about 1130.5840594110.

The spelling of 1445135513 in words is "one billion, four hundred forty-five million, one hundred thirty-five thousand, five hundred thirteen".