3881428530 has 32 divisors (see below), whose sum is σ = 10646204544. Its totient is φ = 887183616.

The previous prime is 3881428513. The next prime is 3881428567. The reversal of 3881428530 is 358241883.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a Curzon number.

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, 9241287 + ... + 9241706.

It is an arithmetic number, because the mean of its divisors is an integer number (332693892).

Almost surely, 2^3881428530 is an apocalyptic number.

3881428530 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

3881428530 is an abundant number, since it is smaller than the sum of its proper divisors (6764776014).

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

3881428530 is a wasteful number, since it uses less digits than its factorization.

3881428530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18483010.

The product of its (nonzero) digits is 184320, while the sum is 42.

The square root of 3881428530 is about 62301.1117878325. Note that the first 3 decimals coincide. The cubic root of 3881428530 is about 1571.5584252355.

The spelling of 3881428530 in words is "three billion, eight hundred eighty-one million, four hundred twenty-eight thousand, five hundred thirty".