1901044618172 has 12 divisors (see below), whose sum is σ = 3802089236400. Its totient is φ = 814733407776.

The previous prime is 1901044618139. The next prime is 1901044618181. The reversal of 1901044618172 is 2718164401091.

1901044618172 is an admirable number.

It is a super-2 number, since 2×1901044618172² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33947225297 + ... + 33947225352.

It is an arithmetic number, because the mean of its divisors is an integer number (316840769700).

Almost surely, 2^{1901044618172} is an apocalyptic number.

It is an amenable number.

1901044618172 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1901044618172 is a wasteful number, since it uses less digits than its factorization.

1901044618172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67894450660 (or 67894450658 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 44.

The spelling of 1901044618172 in words is "one trillion, nine hundred one billion, forty-four million, six hundred eighteen thousand, one hundred seventy-two".