1994011773 has 16 divisors (see below), whose sum is σ = 2864123136. Its totient is φ = 1226687040.

The previous prime is 1994011759. The next prime is 1994011777. The reversal of 1994011773 is 3771104991.

It is not a de Polignac number, because 1994011773 - 2⁴ = 1994011757 is a prime.

It is a super-3 number, since 3×1994011773³ (a number of 29 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1994011777) 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 in 15 ways as a sum of consecutive naturals, for example, 154111 + ... + 166547.

It is an arithmetic number, because the mean of its divisors is an integer number (179007696).

Almost surely, 2^1994011773 is an apocalyptic number.

1994011773 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1994011773 is a deficient number, since it is larger than the sum of its proper divisors (870111363).

1994011773 is a wasteful number, since it uses less digits than its factorization.

1994011773 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16564.

The product of its (nonzero) digits is 47628, while the sum is 42.

The square root of 1994011773 is about 44654.3589473637. The cubic root of 1994011773 is about 1258.6623439468.

It can be divided in two parts, 19940 and 11773, that added together give a palindrome (31713).

The spelling of 1994011773 in words is "one billion, nine hundred ninety-four million, eleven thousand, seven hundred seventy-three".