1881262422 has 80 divisors (see below), whose sum is σ = 4696377840. Its totient is φ = 558871488.

The previous prime is 1881262417. The next prime is 1881262477. The reversal of 1881262422 is 2242621881.

1881262422 is a `hidden beast` number, since 1 + 8 + 8 + 1 + 2 + 624 + 22 = 666.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 45673 + ... + 76475.

It is an arithmetic number, because the mean of its divisors is an integer number (58704723).

Almost surely, 2^1881262422 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1881262422, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2348188920).

1881262422 is an abundant number, since it is smaller than the sum of its proper divisors (2815115418).

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

1881262422 is a wasteful number, since it uses less digits than its factorization.

1881262422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30859 (or 30850 counting only the distinct ones).

The product of its digits is 24576, while the sum is 36.

The square root of 1881262422 is about 43373.5221304427. The cubic root of 1881262422 is about 1234.4773525400.

The spelling of 1881262422 in words is "one billion, eight hundred eighty-one million, two hundred sixty-two thousand, four hundred twenty-two".