1863863874756 has 243 divisors, whose sum is σ = 5340205754247. Its totient is φ = 547841099520.

The previous prime is 1863863874713. The next prime is 1863863874767. The reversal of 1863863874756 is 6574783683681.

The square root of 1863863874756 is 1365234.

It is a perfect power (a square), and thus also a powerful number.

1863863874756 is a `hidden beast` number, since 1 + 86 + 3 + 86 + 387 + 47 + 56 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 1516961722500 + 346902152256 = 1231650^2 + 588984^2 .

It is an unprimeable number.

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 80 ways as a sum of consecutive naturals, for example, 2449229416 + ... + 2449230176.

Almost surely, 2^{1863863874756} is an apocalyptic number.

1863863874756 is the 1365234-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1863863874756

1863863874756 is an abundant number, since it is smaller than the sum of its proper divisors (3476341879491).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1863863874756 is a wasteful number, since it uses less digits than its factorization.

1863863874756 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1604 (or 802 counting only the distinct ones).

The product of its digits is 975421440, while the sum is 72.

The spelling of 1863863874756 in words is "one trillion, eight hundred sixty-three billion, eight hundred sixty-three million, eight hundred seventy-four thousand, seven hundred fifty-six".