1916799240 has 32 divisors (see below), whose sum is σ = 5750398080. Its totient is φ = 511146432.

The previous prime is 1916799233. The next prime is 1916799251. The reversal of 1916799240 is 429976191.

It is a self number, because there is not a number n which added to its sum of digits gives 1916799240.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7986544 + ... + 7986783.

It is an arithmetic number, because the mean of its divisors is an integer number (179699940).

Almost surely, 2^1916799240 is an apocalyptic number.

1916799240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1916799240 is an abundant number, since it is smaller than the sum of its proper divisors (3833598840).

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

1916799240 is a wasteful number, since it uses less digits than its factorization.

1916799240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15973341 (or 15973337 counting only the distinct ones).

The product of its (nonzero) digits is 244944, while the sum is 48.

The square root of 1916799240 is about 43781.2658565282. The cubic root of 1916799240 is about 1242.2019581293.

The spelling of 1916799240 in words is "one billion, nine hundred sixteen million, seven hundred ninety-nine thousand, two hundred forty".