11146381 has 4 divisors (see below), whose sum is σ = 11195712. Its totient is φ = 11097052.

The previous prime is 11146363. The next prime is 11146393. The reversal of 11146381 is 18364111.

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, and also an emirpimes, since its reverse is a distinct semiprime: 18364111 = 61 ⋅301051.

It is a cyclic number.

It is not a de Polignac number, because 11146381 - 2²³ = 2757773 is a prime.

It is a super-2 number, since 2×11146381² = 248483618794322, 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 (11146181) 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, 24325 + ... + 24778.

It is an arithmetic number, because the mean of its divisors is an integer number (2798928).

Almost surely, 2^11146381 is an apocalyptic number.

It is an amenable number.

11146381 is a deficient number, since it is larger than the sum of its proper divisors (49331).

11146381 is an equidigital number, since it uses as much as digits as its factorization.

11146381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49330.

The product of its digits is 576, while the sum is 25.

The square root of 11146381 is about 3338.6196249348. The cubic root of 11146381 is about 223.3801755660.

The spelling of 11146381 in words is "eleven million, one hundred forty-six thousand, three hundred eighty-one".