1916914943 has 8 divisors (see below), whose sum is σ = 1967217840. Its totient is φ = 1866781120.

The previous prime is 1916914939. The next prime is 1916914969. The reversal of 1916914943 is 3494196191.

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

It is a cyclic number.

It is not a de Polignac number, because 1916914943 - 2² = 1916914939 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1916914843) 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, 19133 + ... + 64806.

It is an arithmetic number, because the mean of its divisors is an integer number (245902230).

Almost surely, 2^1916914943 is an apocalyptic number.

1916914943 is a deficient number, since it is larger than the sum of its proper divisors (50302897).

1916914943 is an equidigital number, since it uses as much as digits as its factorization.

1916914943 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84537.

The product of its digits is 209952, while the sum is 47.

The square root of 1916914943 is about 43782.5872122697. The cubic root of 1916914943 is about 1242.2269518094.

The spelling of 1916914943 in words is "one billion, nine hundred sixteen million, nine hundred fourteen thousand, nine hundred forty-three".