2019668693 has 8 divisors (see below), whose sum is σ = 2382650880. Its totient is φ = 1675301040.

The previous prime is 2019668687. The next prime is 2019668747. The reversal of 2019668693 is 3968669102.

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

It is not a de Polignac number, because 2019668693 - 2⁸ = 2019668437 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 (2019668653) 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, 4653398 + ... + 4653831.

It is an arithmetic number, because the mean of its divisors is an integer number (297831360).

Almost surely, 2^2019668693 is an apocalyptic number.

It is an amenable number.

2019668693 is a deficient number, since it is larger than the sum of its proper divisors (362982187).

2019668693 is an equidigital number, since it uses as much as digits as its factorization.

2019668693 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9307267.

The product of its (nonzero) digits is 839808, while the sum is 50.

The square root of 2019668693 is about 44940.7242153484. The cubic root of 2019668693 is about 1264.0377509438.

The spelling of 2019668693 in words is "two billion, nineteen million, six hundred sixty-eight thousand, six hundred ninety-three".