1378680959 has 2 divisors, whose sum is σ = 1378680960. Its totient is φ = 1378680958.

The previous prime is 1378680931. The next prime is 1378681049. The reversal of 1378680959 is 9590868731.

It is a weak prime.

It is an emirp because it is prime and its reverse (9590868731) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1378680959 - 2²⁴ = 1361903743 is a prime.

It is a super-2 number, since 2×1378680959² = 3801522373418319362, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1378688959) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 689340479 + 689340480.

It is an arithmetic number, because the mean of its divisors is an integer number (689340480).

Almost surely, 2^1378680959 is an apocalyptic number.

1378680959 is a deficient number, since it is larger than the sum of its proper divisors (1).

1378680959 is an equidigital number, since it uses as much as digits as its factorization.

1378680959 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3265920, while the sum is 56.

The square root of 1378680959 is about 37130.5933025585. The cubic root of 1378680959 is about 1112.9814495549.

The spelling of 1378680959 in words is "one billion, three hundred seventy-eight million, six hundred eighty thousand, nine hundred fifty-nine".