9168012921 has 16 divisors (see below), whose sum is σ = 12705666624. Its totient is φ = 5875164864.

The previous prime is 9168012907. The next prime is 9168012923. The reversal of 9168012921 is 1292108619.

It is not a de Polignac number, because 9168012921 - 2⁶ = 9168012857 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 9168012921.

It is not an unprimeable number, because it can be changed into a prime (9168012923) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 488346 + ... + 506771.

It is an arithmetic number, because the mean of its divisors is an integer number (794104164).

Almost surely, 2^9168012921 is an apocalyptic number.

It is an amenable number.

9168012921 is a deficient number, since it is larger than the sum of its proper divisors (3537653703).

9168012921 is a wasteful number, since it uses less digits than its factorization.

9168012921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 995240.

The product of its (nonzero) digits is 15552, while the sum is 39.

The square root of 9168012921 is about 95749.7411014777. The cubic root of 9168012921 is about 2092.9478423493.

The spelling of 9168012921 in words is "nine billion, one hundred sixty-eight million, twelve thousand, nine hundred twenty-one".