9421168741909 has 4 divisors (see below), whose sum is σ = 9469983087916. Its totient is φ = 9372354395904.

The previous prime is 9421168741801. The next prime is 9421168741913. The reversal of 9421168741909 is 9091478611249.

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 3352597620100 + 6068571121809 = 1831010^2 + 2463447^2 .

It is a cyclic number.

It is not a de Polignac number, because 9421168741909 - 2¹⁹ = 9421168217621 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 (9421168741969) 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, 24407172714 + ... + 24407173099.

It is an arithmetic number, because the mean of its divisors is an integer number (2367495771979).

Almost surely, 2^{9421168741909} is an apocalyptic number.

It is an amenable number.

9421168741909 is a deficient number, since it is larger than the sum of its proper divisors (48814346007).

9421168741909 is a wasteful number, since it uses less digits than its factorization.

9421168741909 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48814346006.

The product of its (nonzero) digits is 7838208, while the sum is 61.

The spelling of 9421168741909 in words is "nine trillion, four hundred twenty-one billion, one hundred sixty-eight million, seven hundred forty-one thousand, nine hundred nine".