1878725780 has 48 divisors (see below), whose sum is σ = 4046898240. Its totient is φ = 732192000.

The previous prime is 1878725773. The next prime is 1878725791. The reversal of 1878725780 is 875278781.

It is a super-2 number, since 2×1878725780² = 7059221112873216800, which contains 22 as substring.

It is a congruent 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, 1189031 + ... + 1190609.

It is an arithmetic number, because the mean of its divisors is an integer number (84310380).

Almost surely, 2^1878725780 is an apocalyptic number.

1878725780 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 1878725780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2023449120).

1878725780 is an abundant number, since it is smaller than the sum of its proper divisors (2168172460).

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

1878725780 is a wasteful number, since it uses less digits than its factorization.

1878725780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3080 (or 3078 counting only the distinct ones).

The product of its (nonzero) digits is 1756160, while the sum is 53.

The square root of 1878725780 is about 43344.2704402785. The cubic root of 1878725780 is about 1233.9222579819.

The spelling of 1878725780 in words is "one billion, eight hundred seventy-eight million, seven hundred twenty-five thousand, seven hundred eighty".