11910381 has 12 divisors (see below), whose sum is σ = 18473472. Its totient is φ = 6805848.

The previous prime is 11910361. The next prime is 11910391. The reversal of 11910381 is 18301911.

It is not a de Polignac number, because 11910381 - 2⁷ = 11910253 is a prime.

It is a super-2 number, since 2×11910381² = 283714351130322, which contains 22 as substring.

It is a hoax number, since the sum of its digits (24) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11910341) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 40365 + ... + 40658.

It is an arithmetic number, because the mean of its divisors is an integer number (1539456).

Almost surely, 2^11910381 is an apocalyptic number.

It is an amenable number.

11910381 is a deficient number, since it is larger than the sum of its proper divisors (6563091).

11910381 is an equidigital number, since it uses as much as digits as its factorization.

11910381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81040 (or 81033 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 24.

The square root of 11910381 is about 3451.1419849088. The cubic root of 11910381 is about 228.3714896482.

The spelling of 11910381 in words is "eleven million, nine hundred ten thousand, three hundred eighty-one".