11158381 has 16 divisors (see below), whose sum is σ = 12749184. Its totient is φ = 9687744.

The previous prime is 11158373. The next prime is 11158393. The reversal of 11158381 is 18385111.

11158381 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 11158381 - 2³ = 11158373 is a prime.

It is a super-2 number, since 2×11158381² = 249018933082322, 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 (11158321) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19755 + ... + 20311.

It is an arithmetic number, because the mean of its divisors is an integer number (796824).

Almost surely, 2^11158381 is an apocalyptic number.

It is an amenable number.

11158381 is a deficient number, since it is larger than the sum of its proper divisors (1590803).

11158381 is a wasteful number, since it uses less digits than its factorization.

11158381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 660.

The product of its digits is 960, while the sum is 28.

The square root of 11158381 is about 3340.4162914224. The cubic root of 11158381 is about 223.4603092205.

The spelling of 11158381 in words is "eleven million, one hundred fifty-eight thousand, three hundred eighty-one".