1306082457 has 6 divisors (see below), whose sum is σ = 1886563562. Its totient is φ = 870721632.

The previous prime is 1306082447. The next prime is 1306082461. The reversal of 1306082457 is 7542806031.

1306082457 is a `hidden beast` number, since 1 + 3 + 0 + 608 + 2 + 45 + 7 = 666.

It can be written as a sum of positive squares in only one way, i.e., 1303137801 + 2944656 = 36099^2 + 1716^2 .

It is not a de Polignac number, because 1306082457 - 2⁷ = 1306082329 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1306082447) 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 5 ways as a sum of consecutive naturals, for example, 72560128 + ... + 72560145.

Almost surely, 2^1306082457 is an apocalyptic number.

It is an amenable number.

1306082457 is a deficient number, since it is larger than the sum of its proper divisors (580481105).

1306082457 is a wasteful number, since it uses less digits than its factorization.

1306082457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145120279 (or 145120276 counting only the distinct ones).

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

The square root of 1306082457 is about 36139.7628243463. The cubic root of 1306082457 is about 1093.0923763711.

Adding to 1306082457 its reverse (7542806031), we get a palindrome (8848888488).

The spelling of 1306082457 in words is "one billion, three hundred six million, eighty-two thousand, four hundred fifty-seven".