11911895 has 16 divisors (see below), whose sum is σ = 14938560. Its totient is φ = 9106944.

The previous prime is 11911873. The next prime is 11911919. The reversal of 11911895 is 59811911.

11911895 is digitally balanced in base 3, 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 11911895 - 2⁸ = 11911639 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16022 + ... + 16748.

It is an arithmetic number, because the mean of its divisors is an integer number (933660).

Almost surely, 2^11911895 is an apocalyptic number.

11911895 is a deficient number, since it is larger than the sum of its proper divisors (3026665).

11911895 is a wasteful number, since it uses less digits than its factorization.

11911895 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 874.

The product of its digits is 3240, while the sum is 35.

The square root of 11911895 is about 3451.3613256221. The cubic root of 11911895 is about 228.3811657950.

The spelling of 11911895 in words is "eleven million, nine hundred eleven thousand, eight hundred ninety-five".