7978338803 has 2 divisors, whose sum is σ = 7978338804. Its totient is φ = 7978338802.

The previous prime is 7978338793. The next prime is 7978338817. The reversal of 7978338803 is 3088338797.

It is a weak prime.

It is an emirp because it is prime and its reverse (3088338797) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 7978338803 - 2¹⁴ = 7978322419 is a prime.

It is not a weakly prime, because it can be changed into another prime (7978338883) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3989169401 + 3989169402.

It is an arithmetic number, because the mean of its divisors is an integer number (3989169402).

Almost surely, 2^7978338803 is an apocalyptic number.

7978338803 is a deficient number, since it is larger than the sum of its proper divisors (1).

7978338803 is an equidigital number, since it uses as much as digits as its factorization.

7978338803 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6096384, while the sum is 56.

The square root of 7978338803 is about 89321.5472492500. The cubic root of 7978338803 is about 1998.1932686023.

The spelling of 7978338803 in words is "seven billion, nine hundred seventy-eight million, three hundred thirty-eight thousand, eight hundred three".