11864161 has 8 divisors (see below), whose sum is σ = 12606120. Its totient is φ = 11144448.

The previous prime is 11864131. The next prime is 11864183. The reversal of 11864161 is 16146811.

It can be written as a sum of positive squares in 4 ways, for example, as 2371600 + 9492561 = 1540^2 + 3081^2 .

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 11864161 - 2¹⁹ = 11339873 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11864131) 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, 4456 + ... + 6601.

It is an arithmetic number, because the mean of its divisors is an integer number (1575765).

Almost surely, 2^11864161 is an apocalyptic number.

It is an amenable number.

11864161 is a deficient number, since it is larger than the sum of its proper divisors (741959).

11864161 is a wasteful number, since it uses less digits than its factorization.

11864161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11123.

The product of its digits is 1152, while the sum is 28.

The square root of 11864161 is about 3444.4391415730. The cubic root of 11864161 is about 228.0756968826.

The spelling of 11864161 in words is "eleven million, eight hundred sixty-four thousand, one hundred sixty-one".