1308678643 has 2 divisors, whose sum is σ = 1308678644. Its totient is φ = 1308678642.

The previous prime is 1308678629. The next prime is 1308678653. The reversal of 1308678643 is 3468768031.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1308678643 is a prime.

It is a super-5 number, since 5×1308678643⁵ (a number of 47 digits) contains 55555 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1308678593 and 1308678602.

It is not a weakly prime, because it can be changed into another prime (1308678653) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 654339321 + 654339322.

It is an arithmetic number, because the mean of its divisors is an integer number (654339322).

Almost surely, 2^1308678643 is an apocalyptic number.

1308678643 is a deficient number, since it is larger than the sum of its proper divisors (1).

1308678643 is an equidigital number, since it uses as much as digits as its factorization.

1308678643 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 580608, while the sum is 46.

The square root of 1308678643 is about 36175.6636843058. The cubic root of 1308678643 is about 1093.8161675432.

The spelling of 1308678643 in words is "one billion, three hundred eight million, six hundred seventy-eight thousand, six hundred forty-three".