7978794283 has 2 divisors, whose sum is σ = 7978794284. Its totient is φ = 7978794282.

The previous prime is 7978794269. The next prime is 7978794289. The reversal of 7978794283 is 3824978797.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 7978794283 - 2¹³ = 7978786091 is a prime.

It is a super-2 number, since 2×7978794283² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (7978794289) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3989397141 + 3989397142.

It is an arithmetic number, because the mean of its divisors is an integer number (3989397142).

Almost surely, 2^7978794283 is an apocalyptic number.

7978794283 is a deficient number, since it is larger than the sum of its proper divisors (1).

7978794283 is an equidigital number, since it uses as much as digits as its factorization.

7978794283 is an evil number, because the sum of its binary digits is even.

The product of its digits is 42674688, while the sum is 64.

The square root of 7978794283 is about 89324.0968776063. The cubic root of 7978794283 is about 1998.2312932159.

The spelling of 7978794283 in words is "seven billion, nine hundred seventy-eight million, seven hundred ninety-four thousand, two hundred eighty-three".