1945487980779 has 8 divisors (see below), whose sum is σ = 2964553113600. Its totient is φ = 1111707417576.

The previous prime is 1945487980741. The next prime is 1945487980819. The reversal of 1945487980779 is 9770897845491.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1945487980779 - 2⁸ = 1945487980523 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1945487880779) 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 7 ways as a sum of consecutive naturals, for example, 46321142379 + ... + 46321142420.

It is an arithmetic number, because the mean of its divisors is an integer number (370569139200).

Almost surely, 2^{1945487980779} is an apocalyptic number.

1945487980779 is a deficient number, since it is larger than the sum of its proper divisors (1019065132821).

1945487980779 is an equidigital number, since it uses as much as digits as its factorization.

1945487980779 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92642284809.

The product of its (nonzero) digits is 1280240640, while the sum is 78.

The spelling of 1945487980779 in words is "one trillion, nine hundred forty-five billion, four hundred eighty-seven million, nine hundred eighty thousand, seven hundred seventy-nine".