1878519918 has 48 divisors (see below), whose sum is σ = 4149548928. Its totient is φ = 566504400.

The previous prime is 1878519901. The next prime is 1878519947. The reversal of 1878519918 is 8199158781.

It is a super-4 number, since 4×1878519918⁴ (a number of 38 digits) contains 4444 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 147055 + ... + 159317.

It is an arithmetic number, because the mean of its divisors is an integer number (86448936).

Almost surely, 2^1878519918 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1878519918, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2074774464).

1878519918 is an abundant number, since it is smaller than the sum of its proper divisors (2271029010).

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

1878519918 is a wasteful number, since it uses less digits than its factorization.

1878519918 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12501 (or 12490 counting only the distinct ones).

The product of its digits is 1451520, while the sum is 57.

The square root of 1878519918 is about 43341.8956438225. The cubic root of 1878519918 is about 1233.8771871888.

The spelling of 1878519918 in words is "one billion, eight hundred seventy-eight million, five hundred nineteen thousand, nine hundred eighteen".