1985714327144 has 48 divisors (see below), whose sum is σ = 4100334009120. Its totient is φ = 899705774880.

The previous prime is 1985714327111. The next prime is 1985714327147. The reversal of 1985714327144 is 4417234175891.

It is a super-2 number, since 2×1985714327144² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1985714327144.

It is not an unprimeable number, because it can be changed into a prime (1985714327147) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14880842 + ... + 15013689.

It is an arithmetic number, because the mean of its divisors is an integer number (85423625190).

Almost surely, 2^{1985714327144} is an apocalyptic number.

It is an amenable number.

1985714327144 is an abundant number, since it is smaller than the sum of its proper divisors (2114619681976).

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

1985714327144 is a wasteful number, since it uses less digits than its factorization.

1985714327144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29894598 (or 29894575 counting only the distinct ones).

The product of its digits is 6773760, while the sum is 56.

The spelling of 1985714327144 in words is "one trillion, nine hundred eighty-five billion, seven hundred fourteen million, three hundred twenty-seven thousand, one hundred forty-four".