1939375953871 has 18 divisors (see below), whose sum is σ = 2126769103392. Its totient is φ = 1766294472960.

The previous prime is 1939375953863. The next prime is 1939375953883. The reversal of 1939375953871 is 1783595739391.

It is not a de Polignac number, because 1939375953871 - 2³ = 1939375953863 is a prime.

It is a super-2 number, since 2×1939375953871² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1939375953871.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1939375953821) by changing a digit.

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 17 ways as a sum of consecutive naturals, for example, 131806411 + ... + 131821123.

Almost surely, 2^{1939375953871} is an apocalyptic number.

1939375953871 is a deficient number, since it is larger than the sum of its proper divisors (187393149521).

1939375953871 is an frugal number, since it uses more digits than its factorization.

1939375953871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29491 (or 14761 counting only the distinct ones).

The product of its digits is 192893400, while the sum is 70.

The spelling of 1939375953871 in words is "one trillion, nine hundred thirty-nine billion, three hundred seventy-five million, nine hundred fifty-three thousand, eight hundred seventy-one".