2381369 has 4 divisors (see below), whose sum is σ = 2390244. Its totient is φ = 2372496.

The previous prime is 2381363. The next prime is 2381387. The reversal of 2381369 is 9631832.

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 1024144 + 1357225 = 1012^2 + 1165^2 .

It is a cyclic number.

It is not a de Polignac number, because 2381369 - 2¹² = 2377273 is a prime.

It is a super-2 number, since 2×2381369² = 11341836628322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2381363) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4022 + ... + 4575.

It is an arithmetic number, because the mean of its divisors is an integer number (597561).

2^2381369 is an apocalyptic number.

It is an amenable number.

2381369 is a deficient number, since it is larger than the sum of its proper divisors (8875).

2381369 is an equidigital number, since it uses as much as digits as its factorization.

2381369 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8874.

The product of its digits is 7776, while the sum is 32.

The square root of 2381369 is about 1543.1684937167. The cubic root of 2381369 is about 133.5392394951.

The spelling of 2381369 in words is "two million, three hundred eighty-one thousand, three hundred sixty-nine".