1912878318 has 128 divisors (see below), whose sum is σ = 4530290688. Its totient is φ = 532998144.

The previous prime is 1912878311. The next prime is 1912878337. The reversal of 1912878318 is 8138782191.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1912878311) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 6230721 + ... + 6231027.

It is an arithmetic number, because the mean of its divisors is an integer number (35392896).

Almost surely, 2^1912878318 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1912878318, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2265145344).

1912878318 is an abundant number, since it is smaller than the sum of its proper divisors (2617412370).

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

1912878318 is a wasteful number, since it uses less digits than its factorization.

1912878318 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 506.

The product of its digits is 193536, while the sum is 48.

The square root of 1912878318 is about 43736.4643975711. The cubic root of 1912878318 is about 1241.3543816629.

The spelling of 1912878318 in words is "one billion, nine hundred twelve million, eight hundred seventy-eight thousand, three hundred eighteen".