1305081204 has 24 divisors (see below), whose sum is σ = 3480216768. Its totient is φ = 372880320.

The previous prime is 1305081199. The next prime is 1305081221. The reversal of 1305081204 is 4021805031.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7768257 + ... + 7768424.

It is an arithmetic number, because the mean of its divisors is an integer number (145009032).

Almost surely, 2^1305081204 is an apocalyptic number.

1305081204 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1305081204 is an abundant number, since it is smaller than the sum of its proper divisors (2175135564).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1305081204 is a wasteful number, since it uses less digits than its factorization.

1305081204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15536695 (or 15536693 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 24.

The square root of 1305081204 is about 36125.9076564174. The cubic root of 1305081204 is about 1092.8129805824.

Adding to 1305081204 its reverse (4021805031), we get a palindrome (5326886235).

The spelling of 1305081204 in words is "one billion, three hundred five million, eighty-one thousand, two hundred four".