3871019628 has 72 divisors (see below), whose sum is σ = 11247713568. Its totient is φ = 1099600128.

The previous prime is 3871019543. The next prime is 3871019651. The reversal of 3871019628 is 8269101783.

3871019628 is a `hidden beast` number, since 3 + 8 + 7 + 1 + 0 + 19 + 628 = 666.

It is a super-2 number, since 2×3871019628² = 29969585920722516768, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 801 + ... + 87992.

It is an arithmetic number, because the mean of its divisors is an integer number (156218244).

Almost surely, 2^3871019628 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3871019628, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5623856784).

3871019628 is an abundant number, since it is smaller than the sum of its proper divisors (7376693940).

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

3871019628 is a wasteful number, since it uses less digits than its factorization.

3871019628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88983 (or 88978 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 45.

The square root of 3871019628 is about 62217.5186583329. The cubic root of 3871019628 is about 1570.1523413644.

The spelling of 3871019628 in words is "three billion, eight hundred seventy-one million, nineteen thousand, six hundred twenty-eight".