1986973500004 has 6 divisors (see below), whose sum is σ = 3477203625014. Its totient is φ = 993486750000.

The previous prime is 1986973499957. The next prime is 1986973500047. The reversal of 1986973500004 is 4000053796891.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 1984717440000 + 2256060004 = 1408800^2 + 47498^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 248371687497 + ... + 248371687504.

Almost surely, 2^{1986973500004} is an apocalyptic number.

It is an amenable number.

1986973500004 is a deficient number, since it is larger than the sum of its proper divisors (1490230125010).

1986973500004 is a wasteful number, since it uses less digits than its factorization.

1986973500004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 496743375005 (or 496743375003 counting only the distinct ones).

The product of its (nonzero) digits is 1632960, while the sum is 52.

The spelling of 1986973500004 in words is "one trillion, nine hundred eighty-six billion, nine hundred seventy-three million, five hundred thousand, four".