1306390678 has 8 divisors (see below), whose sum is σ = 1959978672. Its totient is φ = 653064456.

The previous prime is 1306390633. The next prime is 1306390703. The reversal of 1306390678 is 8760936031.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52450 + ... + 73237.

It is an arithmetic number, because the mean of its divisors is an integer number (244997334).

Almost surely, 2^1306390678 is an apocalyptic number.

1306390678 is a deficient number, since it is larger than the sum of its proper divisors (653587994).

1306390678 is a wasteful number, since it uses less digits than its factorization.

1306390678 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130886.

The product of its (nonzero) digits is 163296, while the sum is 43.

The square root of 1306390678 is about 36144.0268647532. The cubic root of 1306390678 is about 1093.1783555078.

The spelling of 1306390678 in words is "one billion, three hundred six million, three hundred ninety thousand, six hundred seventy-eight".