11747381 has 2 divisors, whose sum is σ = 11747382. Its totient is φ = 11747380.

The previous prime is 11747371. The next prime is 11747399. The reversal of 11747381 is 18374711.

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., 9394225 + 2353156 = 3065^2 + 1534^2 .

It is an emirp because it is prime and its reverse (18374711) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11747381 - 2⁶ = 11747317 is a prime.

It is a super-2 number, since 2×11747381² = 276001920718322, 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 (11747341) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5873690 + 5873691.

It is an arithmetic number, because the mean of its divisors is an integer number (5873691).

Almost surely, 2^11747381 is an apocalyptic number.

It is an amenable number.

11747381 is a deficient number, since it is larger than the sum of its proper divisors (1).

11747381 is an equidigital number, since it uses as much as digits as its factorization.

11747381 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 11747381 is about 3427.4452584979. The cubic root of 11747381 is about 227.3249049219.

The spelling of 11747381 in words is "eleven million, seven hundred forty-seven thousand, three hundred eighty-one".