11381995 has 4 divisors (see below), whose sum is σ = 13658400. Its totient is φ = 9105592.

The previous prime is 11381989. The next prime is 11382011. The reversal of 11381995 is 59918311.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 59918311 = 163 ⋅367597.

It is a cyclic number.

It is not a de Polignac number, because 11381995 - 2⁵ = 11381963 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1138195 + ... + 1138204.

It is an arithmetic number, because the mean of its divisors is an integer number (3414600).

Almost surely, 2^11381995 is an apocalyptic number.

11381995 is a deficient number, since it is larger than the sum of its proper divisors (2276405).

11381995 is an equidigital number, since it uses as much as digits as its factorization.

11381995 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2276404.

The product of its digits is 9720, while the sum is 37.

The square root of 11381995 is about 3373.7212392253. The cubic root of 11381995 is about 224.9431625982.

The spelling of 11381995 in words is "eleven million, three hundred eighty-one thousand, nine hundred ninety-five".