1994419853 has 4 divisors (see below), whose sum is σ = 2003129340. Its totient is φ = 1985710368.

The previous prime is 1994419837. The next prime is 1994419879. The reversal of 1994419853 is 3589144991.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3589144991 = 47939 ⋅74869.

It can be written as a sum of positive squares in 2 ways, for example, as 860952964 + 1133466889 = 29342^2 + 33667^2 .

It is a cyclic number.

It is not a de Polignac number, because 1994419853 - 2⁴ = 1994419837 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1994419795 and 1994419804.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1994419883) 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 3 ways as a sum of consecutive naturals, for example, 4354400 + ... + 4354857.

It is an arithmetic number, because the mean of its divisors is an integer number (500782335).

Almost surely, 2^1994419853 is an apocalyptic number.

It is an amenable number.

1994419853 is a deficient number, since it is larger than the sum of its proper divisors (8709487).

1994419853 is an equidigital number, since it uses as much as digits as its factorization.

1994419853 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8709486.

The product of its digits is 1399680, while the sum is 53.

The square root of 1994419853 is about 44658.9280323655. The cubic root of 1994419853 is about 1258.7482009949.

The spelling of 1994419853 in words is "one billion, nine hundred ninety-four million, four hundred nineteen thousand, eight hundred fifty-three".