1955972811382 has 4 divisors (see below), whose sum is σ = 2933959217076. Its totient is φ = 977986405690.

The previous prime is 1955972811343. The next prime is 1955972811389. The reversal of 1955972811382 is 2831182795591.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a self number, because there is not a number n which added to its sum of digits gives 1955972811382.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1955972811389) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 488993202844 + ... + 488993202847.

It is an arithmetic number, because the mean of its divisors is an integer number (733489804269).

Almost surely, 2^{1955972811382} is an apocalyptic number.

1955972811382 is a deficient number, since it is larger than the sum of its proper divisors (977986405694).

1955972811382 is an equidigital number, since it uses as much as digits as its factorization.

1955972811382 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 977986405693.

The product of its digits is 10886400, while the sum is 61.

The spelling of 1955972811382 in words is "one trillion, nine hundred fifty-five billion, nine hundred seventy-two million, eight hundred eleven thousand, three hundred eighty-two".