1916268730 has 16 divisors (see below), whose sum is σ = 3652183080. Its totient is φ = 721418752.

The previous prime is 1916268707. The next prime is 1916268737. The reversal of 1916268730 is 378626191.

It can be written as a sum of positive squares in 4 ways, for example, as 1279564441 + 636704289 = 35771^2 + 25233^2 .

It is not an unprimeable number, because it can be changed into a prime (1916268737) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5635915 + ... + 5636254.

Almost surely, 2^1916268730 is an apocalyptic number.

1916268730 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1916268730 is a deficient number, since it is larger than the sum of its proper divisors (1735914350).

1916268730 is a wasteful number, since it uses less digits than its factorization.

1916268730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11272193.

The product of its (nonzero) digits is 108864, while the sum is 43.

The square root of 1916268730 is about 43775.2067956280. The cubic root of 1916268730 is about 1242.0873466886.

The spelling of 1916268730 in words is "one billion, nine hundred sixteen million, two hundred sixty-eight thousand, seven hundred thirty".