11914681 has 8 divisors (see below), whose sum is σ = 12097800. Its totient is φ = 11733120.

The previous prime is 11914673. The next prime is 11914699. The reversal of 11914681 is 18641911.

It can be written as a sum of positive squares in 4 ways, for example, as 2205225 + 9709456 = 1485^2 + 3116^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11914681 - 2³ = 11914673 is a prime.

It is a super-4 number, since 4×11914681⁴ (a number of 29 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11914081) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30435 + ... + 30823.

It is an arithmetic number, because the mean of its divisors is an integer number (1512225).

Almost surely, 2^11914681 is an apocalyptic number.

It is an amenable number.

11914681 is a deficient number, since it is larger than the sum of its proper divisors (183119).

11914681 is a wasteful number, since it uses less digits than its factorization.

11914681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 779.

The product of its digits is 1728, while the sum is 31.

The square root of 11914681 is about 3451.7649108825. The cubic root of 11914681 is about 228.3989692968.

The spelling of 11914681 in words is "eleven million, nine hundred fourteen thousand, six hundred eighty-one".