1306780245 has 48 divisors (see below), whose sum is σ = 2375942400. Its totient is φ = 663645312.

The previous prime is 1306780229. The next prime is 1306780253. The reversal of 1306780245 is 5420876031.

It is not a de Polignac number, because 1306780245 - 2⁴ = 1306780229 is a prime.

It is a congruent number.

It is an unprimeable number.

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 47 ways as a sum of consecutive naturals, for example, 69906 + ... + 86604.

It is an arithmetic number, because the mean of its divisors is an integer number (49498800).

Almost surely, 2^1306780245 is an apocalyptic number.

1306780245 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1306780245 is a deficient number, since it is larger than the sum of its proper divisors (1069162155).

1306780245 is a wasteful number, since it uses less digits than its factorization.

1306780245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16794 (or 16791 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 36.

The square root of 1306780245 is about 36149.4155554416. The cubic root of 1306780245 is about 1093.2870069996.

The spelling of 1306780245 in words is "one billion, three hundred six million, seven hundred eighty thousand, two hundred forty-five".