1941209725128 has 32 divisors (see below), whose sum is σ = 4932582092160. Its totient is φ = 636462204480.

The previous prime is 1941209725109. The next prime is 1941209725177. The reversal of 1941209725128 is 8215279021491.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 662980000 + ... + 662982927.

It is an arithmetic number, because the mean of its divisors is an integer number (154143190380).

Almost surely, 2^{1941209725128} is an apocalyptic number.

It is an amenable number.

1941209725128 is an abundant number, since it is smaller than the sum of its proper divisors (2991372367032).

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

1941209725128 is a wasteful number, since it uses less digits than its factorization.

1941209725128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1325962997 (or 1325962993 counting only the distinct ones).

The product of its (nonzero) digits is 725760, while the sum is 51.

The spelling of 1941209725128 in words is "one trillion, nine hundred forty-one billion, two hundred nine million, seven hundred twenty-five thousand, one hundred twenty-eight".