11851641 has 24 divisors (see below), whose sum is σ = 17881344. Its totient is φ = 7555680.

The previous prime is 11851639. The next prime is 11851673. The reversal of 11851641 is 14615811.

11851641 is a `hidden beast` number, since 1 + 18 + 5 + 1 + 641 = 666.

It is not a de Polignac number, because 11851641 - 2¹ = 11851639 is a prime.

It is a super-2 number, since 2×11851641² = 280922788785762, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (11851621) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 29655 + ... + 30051.

It is an arithmetic number, because the mean of its divisors is an integer number (745056).

Almost surely, 2^11851641 is an apocalyptic number.

It is an amenable number.

11851641 is a deficient number, since it is larger than the sum of its proper divisors (6029703).

11851641 is a wasteful number, since it uses less digits than its factorization.

11851641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 541 (or 538 counting only the distinct ones).

The product of its digits is 960, while the sum is 27.

The square root of 11851641 is about 3442.6212396951. The cubic root of 11851641 is about 227.9954408137.

The spelling of 11851641 in words is "eleven million, eight hundred fifty-one thousand, six hundred forty-one".