9168018641 has 4 divisors (see below), whose sum is σ = 9194439792. Its totient is φ = 9141597492.

The previous prime is 9168018637. The next prime is 9168018649. The reversal of 9168018641 is 1468108619.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 9168018641 - 2² = 9168018637 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 9168018592 and 9168018601.

It is not an unprimeable number, because it can be changed into a prime (9168018649) 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, 13210055 + ... + 13210748.

It is an arithmetic number, because the mean of its divisors is an integer number (2298609948).

Almost surely, 2^9168018641 is an apocalyptic number.

It is an amenable number.

9168018641 is a deficient number, since it is larger than the sum of its proper divisors (26421151).

9168018641 is a wasteful number, since it uses less digits than its factorization.

9168018641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26421150.

The product of its (nonzero) digits is 82944, while the sum is 44.

The square root of 9168018641 is about 95749.7709710055. The cubic root of 9168018641 is about 2092.9482776184.

The spelling of 9168018641 in words is "nine billion, one hundred sixty-eight million, eighteen thousand, six hundred forty-one".