1305616085 has 8 divisors (see below), whose sum is σ = 1578699936. Its totient is φ = 1036519120.

The previous prime is 1305616073. The next prime is 1305616087. The reversal of 1305616085 is 5806165031.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1305616085 - 2²⁴ = 1288838869 is a prime.

It is a super-2 number, since 2×1305616085² = 3409266722821454450, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1305616087) 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 in 7 ways as a sum of consecutive naturals, for example, 995999 + ... + 997308.

It is an arithmetic number, because the mean of its divisors is an integer number (197337492).

Almost surely, 2^1305616085 is an apocalyptic number.

It is an amenable number.

1305616085 is a deficient number, since it is larger than the sum of its proper divisors (273083851).

1305616085 is a wasteful number, since it uses less digits than its factorization.

1305616085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1993443.

The product of its (nonzero) digits is 21600, while the sum is 35.

The square root of 1305616085 is about 36133.3099092790. The cubic root of 1305616085 is about 1092.9622548348.

The spelling of 1305616085 in words is "one billion, three hundred five million, six hundred sixteen thousand, eighty-five".