2978793361 has 2 divisors, whose sum is σ = 2978793362. Its totient is φ = 2978793360.

The previous prime is 2978793347. The next prime is 2978793409. The reversal of 2978793361 is 1633978792.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2039064336 + 939729025 = 45156^2 + 30655^2 .

It is a cyclic number.

It is not a de Polignac number, because 2978793361 - 2¹¹ = 2978791313 is a prime.

It is not a weakly prime, because it can be changed into another prime (2978773361) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1489396680 + 1489396681.

It is an arithmetic number, because the mean of its divisors is an integer number (1489396681).

Almost surely, 2^2978793361 is an apocalyptic number.

It is an amenable number.

2978793361 is a deficient number, since it is larger than the sum of its proper divisors (1).

2978793361 is an equidigital number, since it uses as much as digits as its factorization.

2978793361 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3429216, while the sum is 55.

The square root of 2978793361 is about 54578.3231787126. The cubic root of 2978793361 is about 1438.8431682849.

The spelling of 2978793361 in words is "two billion, nine hundred seventy-eight million, seven hundred ninety-three thousand, three hundred sixty-one".