1994118788 has 12 divisors (see below), whose sum is σ = 3490564560. Its totient is φ = 996814632.

The previous prime is 1994118787. The next prime is 1994118817. The reversal of 1994118788 is 8878114991.

It is not an unprimeable number, because it can be changed into a prime (1994118787) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42206 + ... + 75957.

It is an arithmetic number, because the mean of its divisors is an integer number (290880380).

Almost surely, 2^1994118788 is an apocalyptic number.

It is an amenable number.

1994118788 is a deficient number, since it is larger than the sum of its proper divisors (1496445772).

1994118788 is a wasteful number, since it uses less digits than its factorization.

1994118788 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122386 (or 122384 counting only the distinct ones).

The product of its digits is 1161216, while the sum is 56.

The square root of 1994118788 is about 44655.5571905670. The cubic root of 1994118788 is about 1258.6848602534.

The spelling of 1994118788 in words is "one billion, nine hundred ninety-four million, one hundred eighteen thousand, seven hundred eighty-eight".