1947181125955 has 16 divisors (see below), whose sum is σ = 2553914722464. Its totient is φ = 1416456898560.

The previous prime is 1947181125941. The next prime is 1947181125959. The reversal of 1947181125955 is 5595211817491.

It is not a de Polignac number, because 1947181125955 - 2¹¹ = 1947181123907 is a prime.

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 1947181125955.

It is not an unprimeable number, because it can be changed into a prime (1947181125959) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 223552606 + ... + 223561315.

It is an arithmetic number, because the mean of its divisors is an integer number (159619670154).

Almost surely, 2^{1947181125955} is an apocalyptic number.

1947181125955 is a deficient number, since it is larger than the sum of its proper divisors (606733596509).

1947181125955 is a wasteful number, since it uses less digits than its factorization.

1947181125955 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 447114006.

The product of its digits is 4536000, while the sum is 58.

The spelling of 1947181125955 in words is "one trillion, nine hundred forty-seven billion, one hundred eighty-one million, one hundred twenty-five thousand, nine hundred fifty-five".