1986234881004 has 60 divisors (see below), whose sum is σ = 5664447633768. Its totient is φ = 601889356800.

The previous prime is 1986234880967. The next prime is 1986234881011. The reversal of 1986234881004 is 4001884326891.

It is a happy number.

1986234881004 is a `hidden beast` number, since 1 + 9 + 8 + 623 + 4 + 8 + 8 + 1 + 0 + 0 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

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 19 ways as a sum of consecutive naturals, for example, 278648917 + ... + 278656044.

Almost surely, 2^{1986234881004} is an apocalyptic number.

It is an amenable number.

1986234881004 is an abundant number, since it is smaller than the sum of its proper divisors (3678212752764).

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

1986234881004 is a wasteful number, since it uses less digits than its factorization.

1986234881004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 557304988 (or 557304977 counting only the distinct ones).

The product of its (nonzero) digits is 2654208, while the sum is 54.

The spelling of 1986234881004 in words is "one trillion, nine hundred eighty-six billion, two hundred thirty-four million, eight hundred eighty-one thousand, four".