9181920100002 has 64 divisors (see below), whose sum is σ = 19853682944256. Its totient is φ = 2814178913280.

The previous prime is 9181920099967. The next prime is 9181920100099. The reversal of 9181920100002 is 2000010291819.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 64652923 + ... + 64794785.

It is an arithmetic number, because the mean of its divisors is an integer number (310213796004).

Almost surely, 2^{9181920100002} is an apocalyptic number.

9181920100002 is an abundant number, since it is smaller than the sum of its proper divisors (10671762844254).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

9181920100002 is a wasteful number, since it uses less digits than its factorization.

9181920100002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145115.

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

The spelling of 9181920100002 in words is "nine trillion, one hundred eighty-one billion, nine hundred twenty million, one hundred thousand, two".