1881387852 has 48 divisors (see below), whose sum is σ = 4478664960. Its totient is φ = 614481088.

The previous prime is 1881387817. The next prime is 1881387881. The reversal of 1881387852 is 2587831881.

It is a junction number, because it is equal to n+sod(n) for n = 1881387795 and 1881387804.

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, 646633 + ... + 649535.

It is an arithmetic number, because the mean of its divisors is an integer number (93305520).

Almost surely, 2^1881387852 is an apocalyptic number.

1881387852 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1881387852 is an abundant number, since it is smaller than the sum of its proper divisors (2597277108).

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

1881387852 is a wasteful number, since it uses less digits than its factorization.

1881387852 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3982 (or 3980 counting only the distinct ones).

The product of its digits is 860160, while the sum is 51.

The square root of 1881387852 is about 43374.9680345704. The cubic root of 1881387852 is about 1234.5047874957.

The spelling of 1881387852 in words is "one billion, eight hundred eighty-one million, three hundred eighty-seven thousand, eight hundred fifty-two".