1378758859 has 2 divisors, whose sum is σ = 1378758860. Its totient is φ = 1378758858.

The previous prime is 1378758839. The next prime is 1378758877. The reversal of 1378758859 is 9588578731.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1378758859 - 2¹¹ = 1378756811 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1378758797 and 1378758806.

It is not a weakly prime, because it can be changed into another prime (1378758839) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 689379429 + 689379430.

It is an arithmetic number, because the mean of its divisors is an integer number (689379430).

Almost surely, 2^1378758859 is an apocalyptic number.

1378758859 is a deficient number, since it is larger than the sum of its proper divisors (1).

1378758859 is an equidigital number, since it uses as much as digits as its factorization.

1378758859 is an evil number, because the sum of its binary digits is even.

The product of its digits is 16934400, while the sum is 61.

The square root of 1378758859 is about 37131.6422879463. The cubic root of 1378758859 is about 1113.0024115286.

The spelling of 1378758859 in words is "one billion, three hundred seventy-eight million, seven hundred fifty-eight thousand, eight hundred fifty-nine".