1994439766 has 32 divisors (see below), whose sum is σ = 3457393920. Its totient is φ = 853351200.

The previous prime is 1994439739. The next prime is 1994439781. The reversal of 1994439766 is 6679344991.

It is a self number, because there is not a number n which added to its sum of digits gives 1994439766.

It is a congruent number.

It is an unprimeable number.

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, 50431 + ... + 80821.

It is an arithmetic number, because the mean of its divisors is an integer number (108043560).

Almost surely, 2^1994439766 is an apocalyptic number.

1994439766 is a deficient number, since it is larger than the sum of its proper divisors (1462954154).

1994439766 is a wasteful number, since it uses less digits than its factorization.

1994439766 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30580.

The product of its digits is 8817984, while the sum is 58.

The square root of 1994439766 is about 44659.1509771514. The cubic root of 1994439766 is about 1258.7523902448.

The spelling of 1994439766 in words is "one billion, nine hundred ninety-four million, four hundred thirty-nine thousand, seven hundred sixty-six".