1306478841 has 4 divisors (see below), whose sum is σ = 1741971792. Its totient is φ = 870985892.

The previous prime is 1306478827. The next prime is 1306478861. The reversal of 1306478841 is 1488746031.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1306478841 - 2¹⁰ = 1306477817 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1306478793 and 1306478802.

It is not an unprimeable number, because it can be changed into a prime (1306478861) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 217746471 + ... + 217746476.

It is an arithmetic number, because the mean of its divisors is an integer number (435492948).

Almost surely, 2^1306478841 is an apocalyptic number.

It is an amenable number.

1306478841 is a deficient number, since it is larger than the sum of its proper divisors (435492951).

1306478841 is an equidigital number, since it uses as much as digits as its factorization.

1306478841 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 435492950.

The product of its (nonzero) digits is 129024, while the sum is 42.

The square root of 1306478841 is about 36145.2464509512. The cubic root of 1306478841 is about 1093.2029463434.

The spelling of 1306478841 in words is "one billion, three hundred six million, four hundred seventy-eight thousand, eight hundred forty-one".