11774381 has 2 divisors, whose sum is σ = 11774382. Its totient is φ = 11774380.

The previous prime is 11774369. The next prime is 11774407. The reversal of 11774381 is 18347711.

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., 9554281 + 2220100 = 3091^2 + 1490^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11774381 is a prime.

It is a super-2 number, since 2×11774381² = 277272095866322, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11774311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5887190 + 5887191.

It is an arithmetic number, because the mean of its divisors is an integer number (5887191).

Almost surely, 2^11774381 is an apocalyptic number.

It is an amenable number.

11774381 is a deficient number, since it is larger than the sum of its proper divisors (1).

11774381 is an equidigital number, since it uses as much as digits as its factorization.

11774381 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4704, while the sum is 32.

The square root of 11774381 is about 3431.3817916402. The cubic root of 11774381 is about 227.4989316860.

The spelling of 11774381 in words is "eleven million, seven hundred seventy-four thousand, three hundred eighty-one".