2269978369 has 2 divisors, whose sum is σ = 2269978370. Its totient is φ = 2269978368.

The previous prime is 2269978367. The next prime is 2269978391. The reversal of 2269978369 is 9638799622.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1963553344 + 306425025 = 44312^2 + 17505^2 .

It is a cyclic number.

It is not a de Polignac number, because 2269978369 - 2¹ = 2269978367 is a prime.

It is a super-2 number, since 2×2269978369² = 10305603591455800322, which contains 22 as substring.

Together with 2269978367, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (2269978367) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1134989184 + 1134989185.

It is an arithmetic number, because the mean of its divisors is an integer number (1134989185).

Almost surely, 2^2269978369 is an apocalyptic number.

It is an amenable number.

2269978369 is a deficient number, since it is larger than the sum of its proper divisors (1).

2269978369 is an equidigital number, since it uses as much as digits as its factorization.

2269978369 is an evil number, because the sum of its binary digits is even.

The product of its digits is 17635968, while the sum is 61.

The square root of 2269978369 is about 47644.2899936603. The cubic root of 2269978369 is about 1314.2376549664.

The spelling of 2269978369 in words is "two billion, two hundred sixty-nine million, nine hundred seventy-eight thousand, three hundred sixty-nine".