1916378760 has 128 divisors (see below), whose sum is σ = 6065136000. Its totient is φ = 483065856.

The previous prime is 1916378759. The next prime is 1916378809. The reversal of 1916378760 is 678736191.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1752774 + ... + 1753866.

It is an arithmetic number, because the mean of its divisors is an integer number (47383875).

Almost surely, 2^1916378760 is an apocalyptic number.

1916378760 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1916378760, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3032568000).

1916378760 is an abundant number, since it is smaller than the sum of its proper divisors (4148757240).

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

1916378760 is a wasteful number, since it uses less digits than its factorization.

1916378760 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1895 (or 1891 counting only the distinct ones).

The product of its (nonzero) digits is 381024, while the sum is 48.

The square root of 1916378760 is about 43776.4635392125. The cubic root of 1916378760 is about 1242.1111193208. Note that the first 5 decimals are identical.

The spelling of 1916378760 in words is "one billion, nine hundred sixteen million, three hundred seventy-eight thousand, seven hundred sixty".