2018851820380 has 24 divisors (see below), whose sum is σ = 4241578395600. Its totient is φ = 807161761920.

The previous prime is 2018851820371. The next prime is 2018851820387. The reversal of 2018851820380 is 830281588102.

It is a self number, because there is not a number n which added to its sum of digits gives 2018851820380.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2018851820387) 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, 23641705 + ... + 23726944.

It is an arithmetic number, because the mean of its divisors is an integer number (176732433150).

Almost surely, 2^{2018851820380} is an apocalyptic number.

2018851820380 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2018851820380 is an abundant number, since it is smaller than the sum of its proper divisors (2222726575220).

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

2018851820380 is a wasteful number, since it uses less digits than its factorization.

2018851820380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47370789 (or 47370787 counting only the distinct ones).

The product of its (nonzero) digits is 245760, while the sum is 46.

The spelling of 2018851820380 in words is "two trillion, eighteen billion, eight hundred fifty-one million, eight hundred twenty thousand, three hundred eighty".