1305066613 has 16 divisors (see below), whose sum is σ = 1427650560. Its totient is φ = 1189641600.

The previous prime is 1305066601. The next prime is 1305066617. The reversal of 1305066613 is 3166605031.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1305066613 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1305066617) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19156 + ... + 54562.

It is an arithmetic number, because the mean of its divisors is an integer number (89228160).

Almost surely, 2^1305066613 is an apocalyptic number.

It is an amenable number.

1305066613 is a deficient number, since it is larger than the sum of its proper divisors (122583947).

1305066613 is a wasteful number, since it uses less digits than its factorization.

1305066613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35508.

The product of its (nonzero) digits is 9720, while the sum is 31.

The square root of 1305066613 is about 36125.7057093699. The cubic root of 1305066613 is about 1092.8089079639.

The spelling of 1305066613 in words is "one billion, three hundred five million, sixty-six thousand, six hundred thirteen".