11648381 has 4 divisors (see below), whose sum is σ = 11673792. Its totient is φ = 11622972.

The previous prime is 11648363. The next prime is 11648411. The reversal of 11648381 is 18384611.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 11648381 - 2⁶ = 11648317 is a prime.

It is a super-2 number, since 2×11648381² = 271369559842322, 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 (11648321) 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, 12005 + ... + 12938.

It is an arithmetic number, because the mean of its divisors is an integer number (2918448).

Almost surely, 2^11648381 is an apocalyptic number.

It is an amenable number.

11648381 is a deficient number, since it is larger than the sum of its proper divisors (25411).

11648381 is an equidigital number, since it uses as much as digits as its factorization.

11648381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25410.

The product of its digits is 4608, while the sum is 32.

The square root of 11648381 is about 3412.9724581367. The cubic root of 11648381 is about 226.6845158474.

The spelling of 11648381 in words is "eleven million, six hundred forty-eight thousand, three hundred eighty-one".