1878730128 has 60 divisors (see below), whose sum is σ = 5735824848. Its totient is φ = 569311680.

The previous prime is 1878730111. The next prime is 1878730141. The reversal of 1878730128 is 8210378781.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 591450 + ... + 594617.

Almost surely, 2^1878730128 is an apocalyptic number.

1878730128 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1878730128 is an abundant number, since it is smaller than the sum of its proper divisors (3857094720).

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

1878730128 is a wasteful number, since it uses less digits than its factorization.

1878730128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1186092 (or 1186083 counting only the distinct ones).

The product of its (nonzero) digits is 150528, while the sum is 45.

The square root of 1878730128 is about 43344.3205968210. The cubic root of 1878730128 is about 1233.9232098841.

The spelling of 1878730128 in words is "one billion, eight hundred seventy-eight million, seven hundred thirty thousand, one hundred twenty-eight".