1881077440 has 112 divisors (see below), whose sum is σ = 4916363040. Its totient is φ = 679854080.

The previous prime is 1881077383. The next prime is 1881077477. The reversal of 1881077440 is 447701881.

It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a junction number, because it is equal to n+sod(n) for n = 1881077393 and 1881077402.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 607416 + ... + 610504.

Almost surely, 2^1881077440 is an apocalyptic number.

1881077440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1881077440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2458181520).

1881077440 is an abundant number, since it is smaller than the sum of its proper divisors (3035285600).

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

1881077440 is a wasteful number, since it uses less digits than its factorization.

1881077440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3290 (or 3280 counting only the distinct ones).

The product of its (nonzero) digits is 50176, while the sum is 40.

The square root of 1881077440 is about 43371.3896480157. The cubic root of 1881077440 is about 1234.4368897153.

The spelling of 1881077440 in words is "one billion, eight hundred eighty-one million, seventy-seven thousand, four hundred forty".