1945487980802 has 8 divisors (see below), whose sum is σ = 2918266099212. Its totient is φ = 972732614400.

The previous prime is 1945487980741. The next prime is 1945487980819. The reversal of 1945487980802 is 2080897845491.

It can be written as a sum of positive squares in 2 ways, for example, as 1941226371841 + 4261608961 = 1393279^2 + 65281^2 .

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

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 5472599 + ... + 5817242.

Almost surely, 2^{1945487980802} is an apocalyptic number.

1945487980802 is a deficient number, since it is larger than the sum of its proper divisors (972778118410).

1945487980802 is a wasteful number, since it uses less digits than its factorization.

1945487980802 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11376004.

The product of its (nonzero) digits is 46448640, while the sum is 65.

The spelling of 1945487980802 in words is "one trillion, nine hundred forty-five billion, four hundred eighty-seven million, nine hundred eighty thousand, eight hundred two".