1994911019 has 8 divisors (see below), whose sum is σ = 2120294880. Its totient is φ = 1870420096.

The previous prime is 1994911001. The next prime is 1994911027. The reversal of 1994911019 is 9101194991.

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 1994911019 - 2¹⁶ = 1994845483 is a prime.

It is a super-2 number, since 2×1994911019² = 7959339947455236722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1994911319) 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, 218624 + ... + 227565.

It is an arithmetic number, because the mean of its divisors is an integer number (265036860).

Almost surely, 2^1994911019 is an apocalyptic number.

1994911019 is a deficient number, since it is larger than the sum of its proper divisors (125383861).

1994911019 is a wasteful number, since it uses less digits than its factorization.

1994911019 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 446469.

The product of its (nonzero) digits is 26244, while the sum is 44.

The square root of 1994911019 is about 44664.4267734402. The cubic root of 1994911019 is about 1258.8515232004.

The spelling of 1994911019 in words is "one billion, nine hundred ninety-four million, nine hundred eleven thousand, nineteen".