1878728512 has 28 divisors (see below), whose sum is σ = 3924320320. Its totient is φ = 889923456.

The previous prime is 1878728507. The next prime is 1878728519. The reversal of 1878728512 is 2158278781.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1878728519) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 771288 + ... + 773719.

Almost surely, 2^1878728512 is an apocalyptic number.

It is an amenable number.

1878728512 is an abundant number, since it is smaller than the sum of its proper divisors (2045591808).

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

1878728512 is a wasteful number, since it uses less digits than its factorization.

1878728512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1545038 (or 1545028 counting only the distinct ones).

The product of its digits is 501760, while the sum is 49.

The square root of 1878728512 is about 43344.3019553897. The cubic root of 1878728512 is about 1233.9228560954.

The spelling of 1878728512 in words is "one billion, eight hundred seventy-eight million, seven hundred twenty-eight thousand, five hundred twelve".