2381768369 has 4 divisors (see below), whose sum is σ = 2382230820. Its totient is φ = 2381305920.

The previous prime is 2381768353. The next prime is 2381768371. The reversal of 2381768369 is 9638671832.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1476480625 + 905287744 = 38425^2 + 30088^2 .

It is a cyclic number.

It is not a de Polignac number, because 2381768369 - 2⁴ = 2381768353 is a prime.

It is a super-2 number, since 2×2381768369² = 11345641127137840322, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2381768369.

It is not an unprimeable number, because it can be changed into a prime (2381768339) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 223412 + ... + 233829.

It is an arithmetic number, because the mean of its divisors is an integer number (595557705).

Almost surely, 2^2381768369 is an apocalyptic number.

It is an amenable number.

2381768369 is a deficient number, since it is larger than the sum of its proper divisors (462451).

2381768369 is an equidigital number, since it uses as much as digits as its factorization.

2381768369 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 462450.

The product of its digits is 2612736, while the sum is 53.

The square root of 2381768369 is about 48803.3643205056. The cubic root of 2381768369 is about 1335.4670417214.

The spelling of 2381768369 in words is "two billion, three hundred eighty-one million, seven hundred sixty-eight thousand, three hundred sixty-nine".