1881047280 has 360 divisors, whose sum is σ = 7257111408. Its totient is φ = 400490496.

The previous prime is 1881047279. The next prime is 1881047281. The reversal of 1881047280 is 827401881.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1881047279) and next prime (1881047281).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1881047281) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 19392192 + ... + 19392288.

Almost surely, 2^1881047280 is an apocalyptic number.

1881047280 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 1881047280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3628555704).

1881047280 is an abundant number, since it is smaller than the sum of its proper divisors (5376064128).

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

1881047280 is a wasteful number, since it uses less digits than its factorization.

1881047280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 241 (or 131 counting only the distinct ones).

The product of its (nonzero) digits is 28672, while the sum is 39.

The square root of 1881047280 is about 43371.0419519753. The cubic root of 1881047280 is about 1234.4302922879.

The spelling of 1881047280 in words is "one billion, eight hundred eighty-one million, forty-seven thousand, two hundred eighty".