1994460019 has 16 divisors (see below), whose sum is σ = 2104104960. Its totient is φ = 1886844960.

The previous prime is 1994460011. The next prime is 1994460031. The reversal of 1994460019 is 9100644991.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 1994460019 - 2³ = 1994460011 is a prime.

It is a super-2 number, since 2×1994460019² = 7955741534778960722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1994460011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 861874 + ... + 864184.

It is an arithmetic number, because the mean of its divisors is an integer number (131506560).

Almost surely, 2^1994460019 is an apocalyptic number.

1994460019 is a deficient number, since it is larger than the sum of its proper divisors (109644941).

1994460019 is a wasteful number, since it uses less digits than its factorization.

1994460019 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2730.

The product of its (nonzero) digits is 69984, while the sum is 43.

The square root of 1994460019 is about 44659.3777274158. The cubic root of 1994460019 is about 1258.7566509945.

The spelling of 1994460019 in words is "one billion, nine hundred ninety-four million, four hundred sixty thousand, nineteen".