1881015968 has 36 divisors (see below), whose sum is σ = 4010039838. Its totient is φ = 868158720.

The previous prime is 1881015959. The next prime is 1881016003. The reversal of 1881015968 is 8695101881.

It can be written as a sum of positive squares in 3 ways, for example, as 1537580944 + 343435024 = 39212^2 + 18532^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 168503 + ... + 179318.

Almost surely, 2^1881015968 is an apocalyptic number.

It is an amenable number.

1881015968 is an abundant number, since it is smaller than the sum of its proper divisors (2129023870).

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

1881015968 is a wasteful number, since it uses less digits than its factorization.

1881015968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 347857 (or 347836 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 47.

The square root of 1881015968 is about 43370.6809722882. The cubic root of 1881015968 is about 1234.4234427887.

The spelling of 1881015968 in words is "one billion, eight hundred eighty-one million, fifteen thousand, nine hundred sixty-eight".