1145212613 has 2 divisors, whose sum is σ = 1145212614. Its totient is φ = 1145212612.

The previous prime is 1145212603. The next prime is 1145212637. The reversal of 1145212613 is 3162125411.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1068439969 + 76772644 = 32687^2 + 8762^2 .

It is a cyclic number.

It is not a de Polignac number, because 1145212613 - 2⁸ = 1145212357 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1145212603) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 572606306 + 572606307.

It is an arithmetic number, because the mean of its divisors is an integer number (572606307).

Almost surely, 2^1145212613 is an apocalyptic number.

It is an amenable number.

1145212613 is a deficient number, since it is larger than the sum of its proper divisors (1).

1145212613 is an equidigital number, since it uses as much as digits as its factorization.

1145212613 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1440, while the sum is 26.

The square root of 1145212613 is about 33840.9901303139. The cubic root of 1145212613 is about 1046.2337063571.

The spelling of 1145212613 in words is "one billion, one hundred forty-five million, two hundred twelve thousand, six hundred thirteen".