1878561134396 has 6 divisors (see below), whose sum is σ = 3287481985200. Its totient is φ = 939280567196.

The previous prime is 1878561134383. The next prime is 1878561134419. The reversal of 1878561134396 is 6934311658781.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 234820141796 + ... + 234820141803.

It is an arithmetic number, because the mean of its divisors is an integer number (547913664200).

Almost surely, 2^{1878561134396} is an apocalyptic number.

It is an amenable number.

1878561134396 is a deficient number, since it is larger than the sum of its proper divisors (1408920850804).

1878561134396 is a wasteful number, since it uses less digits than its factorization.

1878561134396 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 469640283603 (or 469640283601 counting only the distinct ones).

The product of its digits is 26127360, while the sum is 62.

The spelling of 1878561134396 in words is "one trillion, eight hundred seventy-eight billion, five hundred sixty-one million, one hundred thirty-four thousand, three hundred ninety-six".