1881874578 has 16 divisors (see below), whose sum is σ = 3764186496. Its totient is φ = 627218640.

The previous prime is 1881874573. The next prime is 1881874601. The reversal of 1881874578 is 8754781881.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (1881874571) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 72343 + ... + 94853.

It is an arithmetic number, because the mean of its divisors is an integer number (235261656).

Almost surely, 2^1881874578 is an apocalyptic number.

1881874578 is an abundant number, since it is smaller than the sum of its proper divisors (1882311918).

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

1881874578 is a wasteful number, since it uses less digits than its factorization.

1881874578 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36449.

The product of its digits is 4014080, while the sum is 57.

The square root of 1881874578 is about 43380.5783502249. The cubic root of 1881874578 is about 1234.6112361772.

The spelling of 1881874578 in words is "one billion, eight hundred eighty-one million, eight hundred seventy-four thousand, five hundred seventy-eight".