1306545026 has 4 divisors (see below), whose sum is σ = 1959817542. Its totient is φ = 653272512.

The previous prime is 1306545011. The next prime is 1306545043. The reversal of 1306545026 is 6205456031.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 982509025 + 324036001 = 31345^2 + 18001^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1306544983 and 1306545001.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 326636255 + ... + 326636258.

Almost surely, 2^1306545026 is an apocalyptic number.

1306545026 is a deficient number, since it is larger than the sum of its proper divisors (653272516).

1306545026 is an equidigital number, since it uses as much as digits as its factorization.

1306545026 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 653272515.

The product of its (nonzero) digits is 21600, while the sum is 32.

The square root of 1306545026 is about 36146.1619815991. The cubic root of 1306545026 is about 1093.2214062457.

The spelling of 1306545026 in words is "one billion, three hundred six million, five hundred forty-five thousand, twenty-six".