1881771336 has 96 divisors (see below), whose sum is σ = 5254554240. Its totient is φ = 608056704.

The previous prime is 1881771323. The next prime is 1881771373. The reversal of 1881771336 is 6331771881.

It is a junction number, because it is equal to n+sod(n) for n = 1881771291 and 1881771300.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 359490 + ... + 364686.

It is an arithmetic number, because the mean of its divisors is an integer number (54734940).

Almost surely, 2^1881771336 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1881771336, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2627277120).

1881771336 is an abundant number, since it is smaller than the sum of its proper divisors (3372782904).

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

1881771336 is a wasteful number, since it uses less digits than its factorization.

1881771336 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5363 (or 5356 counting only the distinct ones).

The product of its digits is 169344, while the sum is 45.

The square root of 1881771336 is about 43379.3883774310. The cubic root of 1881771336 is about 1234.5886583239.

The spelling of 1881771336 in words is "one billion, eight hundred eighty-one million, seven hundred seventy-one thousand, three hundred thirty-six".