1986714918320 has 40 divisors (see below), whose sum is σ = 5039031476880. Its totient is φ = 722441788160.

The previous prime is 1986714918271. The next prime is 1986714918323. The reversal of 1986714918320 is 238194176891.

It is a tau number, because it is divible by the number of its divisors (40).

It is a self number, because there is not a number n which added to its sum of digits gives 1986714918320.

It is not an unprimeable number, because it can be changed into a prime (1986714918323) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1128814415 + ... + 1128816174.

It is an arithmetic number, because the mean of its divisors is an integer number (125975786922).

Almost surely, 2^{1986714918320} is an apocalyptic number.

1986714918320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1986714918320 is an abundant number, since it is smaller than the sum of its proper divisors (3052316558560).

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

1986714918320 is a wasteful number, since it uses less digits than its factorization.

1986714918320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2257630613 (or 2257630607 counting only the distinct ones).

The product of its (nonzero) digits is 5225472, while the sum is 59.

The spelling of 1986714918320 in words is "one trillion, nine hundred eighty-six billion, seven hundred fourteen million, nine hundred eighteen thousand, three hundred twenty".