1985279010384 has 80 divisors (see below), whose sum is σ = 5180539852800. Its totient is φ = 655085813760.

The previous prime is 1985279010349. The next prime is 1985279010389. The reversal of 1985279010384 is 4830109725891.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1985279010389) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2374444 + ... + 3099764.

It is an arithmetic number, because the mean of its divisors is an integer number (64756748160).

Almost surely, 2^{1985279010384} is an apocalyptic number.

It is an amenable number.

1985279010384 is an abundant number, since it is smaller than the sum of its proper divisors (3195260842416).

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

1985279010384 is a wasteful number, since it uses less digits than its factorization.

1985279010384 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 725908 (or 725902 counting only the distinct ones).

The product of its (nonzero) digits is 4354560, while the sum is 57.

The spelling of 1985279010384 in words is "one trillion, nine hundred eighty-five billion, two hundred seventy-nine million, ten thousand, three hundred eighty-four".