11618961 has 8 divisors (see below), whose sum is σ = 15510720. Its totient is φ = 7736592.

The previous prime is 11618953. The next prime is 11618983. The reversal of 11618961 is 16981611.

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

It is not a de Polignac number, because 11618961 - 2³ = 11618953 is a prime.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (11618911) 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, 1396 + ... + 5018.

It is an arithmetic number, because the mean of its divisors is an integer number (1938840).

Almost surely, 2^11618961 is an apocalyptic number.

It is an amenable number.

11618961 is a deficient number, since it is larger than the sum of its proper divisors (3891759).

11618961 is a wasteful number, since it uses less digits than its factorization.

11618961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4695.

The product of its digits is 2592, while the sum is 33.

The square root of 11618961 is about 3408.6597072750. The cubic root of 11618961 is about 226.4935113073.

The spelling of 11618961 in words is "eleven million, six hundred eighteen thousand, nine hundred sixty-one".