1878428688 has 20 divisors (see below), whose sum is σ = 4852607568. Its totient is φ = 626142880.

The previous prime is 1878428647. The next prime is 1878428701. The reversal of 1878428688 is 8868248781.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19566918 + ... + 19567013.

Almost surely, 2^1878428688 is an apocalyptic number.

It is an amenable number.

1878428688 is an abundant number, since it is smaller than the sum of its proper divisors (2974178880).

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

1878428688 is a wasteful number, since it uses less digits than its factorization.

1878428688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39133942 (or 39133936 counting only the distinct ones).

The product of its digits is 11010048, while the sum is 60.

The square root of 1878428688 is about 43340.8431851527. The cubic root of 1878428688 is about 1233.8572125203.

The spelling of 1878428688 in words is "one billion, eight hundred seventy-eight million, four hundred twenty-eight thousand, six hundred eighty-eight".