1001919090920 has 64 divisors (see below), whose sum is σ = 2459364733440. Its totient is φ = 364318099200.

The previous prime is 1001919090919. The next prime is 1001919090947. The reversal of 1001919090920 is 290909191001.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15041609 + ... + 15108071.

It is an arithmetic number, because the mean of its divisors is an integer number (38427573960).

Almost surely, 2^{1001919090920} is an apocalyptic number.

1001919090920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1001919090920 is an abundant number, since it is smaller than the sum of its proper divisors (1457445642520).

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

1001919090920 is a wasteful number, since it uses less digits than its factorization.

1001919090920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100746 (or 100742 counting only the distinct ones).

The product of its (nonzero) digits is 13122, while the sum is 41.

The spelling of 1001919090920 in words is "one trillion, one billion, nine hundred nineteen million, ninety thousand, nine hundred twenty".