1939952311820 has 24 divisors (see below), whose sum is σ = 4075325911104. Its totient is φ = 775709294976.

The previous prime is 1939952311813. The next prime is 1939952311879. The reversal of 1939952311820 is 281132599391.

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, 16918292 + ... + 17032571.

It is an arithmetic number, because the mean of its divisors is an integer number (169805246296).

Almost surely, 2^{1939952311820} is an apocalyptic number.

1939952311820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1939952311820 is an abundant number, since it is smaller than the sum of its proper divisors (2135373599284).

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

1939952311820 is a wasteful number, since it uses less digits than its factorization.

1939952311820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33953729 (or 33953727 counting only the distinct ones).

The product of its (nonzero) digits is 1049760, while the sum is 53.

The spelling of 1939952311820 in words is "one trillion, nine hundred thirty-nine billion, nine hundred fifty-two million, three hundred eleven thousand, eight hundred twenty".