1881889860160 has 28 divisors (see below), whose sum is σ = 4481250230268. Its totient is φ = 752755943936.

The previous prime is 1881889860139. The next prime is 1881889860161. The reversal of 1881889860160 is 610689881881.

It can be written as a sum of positive squares in 2 ways, for example, as 1322481600064 + 559408260096 = 1149992^2 + 747936^2 .

It is a Smith number, since the sum of its digits (64) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (64).

It is a junction number, because it is equal to n+sod(n) for n = 1881889860092 and 1881889860101.

It is not an unprimeable number, because it can be changed into a prime (1881889860161) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2940452587 + ... + 2940453226.

It is an arithmetic number, because the mean of its divisors is an integer number (160044651081).

Almost surely, 2^{1881889860160} is an apocalyptic number.

1881889860160 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1881889860160 is an abundant number, since it is smaller than the sum of its proper divisors (2599360370108).

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

1881889860160 is an equidigital number, since it uses as much as digits as its factorization.

1881889860160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5880905830 (or 5880905820 counting only the distinct ones).

The product of its (nonzero) digits is 10616832, while the sum is 64.

The spelling of 1881889860160 in words is "one trillion, eight hundred eighty-one billion, eight hundred eighty-nine million, eight hundred sixty thousand, one hundred sixty".