1305245803 has 2 divisors, whose sum is σ = 1305245804. Its totient is φ = 1305245802.

The previous prime is 1305245797. The next prime is 1305245807. The reversal of 1305245803 is 3085425031.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1305245803 is a prime.

It is a super-2 number, since 2×1305245803² = 3407333212498229618, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1305245807) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 652622901 + 652622902.

It is an arithmetic number, because the mean of its divisors is an integer number (652622902).

Almost surely, 2^1305245803 is an apocalyptic number.

1305245803 is a deficient number, since it is larger than the sum of its proper divisors (1).

1305245803 is an equidigital number, since it uses as much as digits as its factorization.

1305245803 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 14400, while the sum is 31.

The square root of 1305245803 is about 36128.1857142038. The cubic root of 1305245803 is about 1092.8589211113.

The spelling of 1305245803 in words is "one billion, three hundred five million, two hundred forty-five thousand, eight hundred three".