11618573 has 4 divisors (see below), whose sum is σ = 11696700. Its totient is φ = 11540448.

The previous prime is 11618567. The next prime is 11618591. The reversal of 11618573 is 37581611.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4012009 + 7606564 = 2003^2 + 2758^2 .

It is a cyclic number.

It is not a de Polignac number, because 11618573 - 2¹⁰ = 11617549 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11618543) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38840 + ... + 39137.

It is an arithmetic number, because the mean of its divisors is an integer number (2924175).

Almost surely, 2^11618573 is an apocalyptic number.

It is an amenable number.

11618573 is a deficient number, since it is larger than the sum of its proper divisors (78127).

11618573 is an equidigital number, since it uses as much as digits as its factorization.

11618573 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78126.

The product of its digits is 5040, while the sum is 32.

The square root of 11618573 is about 3408.6027929344. The cubic root of 11618573 is about 226.4909901277.

The spelling of 11618573 in words is "eleven million, six hundred eighteen thousand, five hundred seventy-three".