1917916343 has 16 divisors (see below), whose sum is σ = 2224696320. Its totient is φ = 1619511936.

The previous prime is 1917916333. The next prime is 1917916393. The reversal of 1917916343 is 3436197191.

It is not a de Polignac number, because 1917916343 - 2²⁰ = 1916867767 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1917916294 and 1917916303.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1917916303) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 124838 + ... + 139356.

It is an arithmetic number, because the mean of its divisors is an integer number (139043520).

Almost surely, 2^1917916343 is an apocalyptic number.

1917916343 is a deficient number, since it is larger than the sum of its proper divisors (306779977).

1917916343 is a wasteful number, since it uses less digits than its factorization.

1917916343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14806.

The product of its digits is 122472, while the sum is 44.

The square root of 1917916343 is about 43794.0217723835. The cubic root of 1917916343 is about 1242.4432280575.

The spelling of 1917916343 in words is "one billion, nine hundred seventeen million, nine hundred sixteen thousand, three hundred forty-three".