1916163799 has 8 divisors (see below), whose sum is σ = 2090677392. Its totient is φ = 1741703040.

The previous prime is 1916163793. The next prime is 1916163803. The reversal of 1916163799 is 9973616191.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1916163799 - 2⁹ = 1916163287 is a prime.

It is a super-2 number, since 2×1916163799² = 7343367409196224802, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1916163793) 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, 134607 + ... + 148159.

It is an arithmetic number, because the mean of its divisors is an integer number (261334674).

Almost surely, 2^1916163799 is an apocalyptic number.

1916163799 is a deficient number, since it is larger than the sum of its proper divisors (174513593).

1916163799 is a wasteful number, since it uses less digits than its factorization.

1916163799 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26417.

The product of its digits is 551124, while the sum is 52.

The square root of 1916163799 is about 43774.0082583261. The cubic root of 1916163799 is about 1242.0646748778.

The spelling of 1916163799 in words is "one billion, nine hundred sixteen million, one hundred sixty-three thousand, seven hundred ninety-nine".