11168381 has 4 divisors (see below), whose sum is σ = 12763872. Its totient is φ = 9572892.

The previous prime is 11168357. The next prime is 11168387. The reversal of 11168381 is 18386111.

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 de Polignac number, because none of the positive numbers 2^k-11168381 is a prime.

It is a super-2 number, since 2×11168381² = 249465468322322, 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 (11168387) 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, 797735 + ... + 797748.

It is an arithmetic number, because the mean of its divisors is an integer number (3190968).

Almost surely, 2^11168381 is an apocalyptic number.

It is an amenable number.

11168381 is a deficient number, since it is larger than the sum of its proper divisors (1595491).

11168381 is an equidigital number, since it uses as much as digits as its factorization.

11168381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1595490.

The product of its digits is 1152, while the sum is 29.

The square root of 11168381 is about 3341.9127756421. The cubic root of 11168381 is about 223.5270433905.

The spelling of 11168381 in words is "eleven million, one hundred sixty-eight thousand, three hundred eighty-one".