1878520840 has 96 divisors (see below), whose sum is σ = 4986360000. Its totient is φ = 634945920.

The previous prime is 1878520829. The next prime is 1878520867. The reversal of 1878520840 is 480258781.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 132411 + ... + 145909.

It is an arithmetic number, because the mean of its divisors is an integer number (51941250).

Almost surely, 2^1878520840 is an apocalyptic number.

1878520840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1878520840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2493180000).

1878520840 is an abundant number, since it is smaller than the sum of its proper divisors (3107839160).

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

1878520840 is a wasteful number, since it uses less digits than its factorization.

1878520840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13595 (or 13584 counting only the distinct ones).

The product of its (nonzero) digits is 143360, while the sum is 43.

The square root of 1878520840 is about 43341.9062801811. The cubic root of 1878520840 is about 1233.8773890560.

The spelling of 1878520840 in words is "one billion, eight hundred seventy-eight million, five hundred twenty thousand, eight hundred forty".