1994529939 has 16 divisors (see below), whose sum is σ = 2776032000. Its totient is φ = 1271400416.

The previous prime is 1994529937. The next prime is 1994529949. The reversal of 1994529939 is 9399254991.

1994529939 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 1994529939 - 2¹ = 1994529937 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1994529937) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 348997 + ... + 354665.

It is an arithmetic number, because the mean of its divisors is an integer number (173502000).

Almost surely, 2^1994529939 is an apocalyptic number.

1994529939 is a deficient number, since it is larger than the sum of its proper divisors (781502061).

1994529939 is a wasteful number, since it uses less digits than its factorization.

1994529939 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10794.

The product of its digits is 7085880, while the sum is 60.

The square root of 1994529939 is about 44660.1605348660. The cubic root of 1994529939 is about 1258.7713602785.

The spelling of 1994529939 in words is "one billion, nine hundred ninety-four million, five hundred twenty-nine thousand, nine hundred thirty-nine".