1994753773 has 2 divisors, whose sum is σ = 1994753774. Its totient is φ = 1994753772.

The previous prime is 1994753749. The next prime is 1994753801. The reversal of 1994753773 is 3773574991.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1906806889 + 87946884 = 43667^2 + 9378^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1994753773 is a prime.

It is a super-2 number, since 2×1994753773² = 7958085229795471058, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1994753473) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 997376886 + 997376887.

It is an arithmetic number, because the mean of its divisors is an integer number (997376887).

Almost surely, 2^1994753773 is an apocalyptic number.

It is an amenable number.

1994753773 is a deficient number, since it is larger than the sum of its proper divisors (1).

1994753773 is an equidigital number, since it uses as much as digits as its factorization.

1994753773 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5000940, while the sum is 55.

The square root of 1994753773 is about 44662.6664340588. Note that the first 3 decimals coincide. The cubic root of 1994753773 is about 1258.8184466093.

The spelling of 1994753773 in words is "one billion, nine hundred ninety-four million, seven hundred fifty-three thousand, seven hundred seventy-three".