1994010988 has 18 divisors (see below), whose sum is σ = 3706861676. Its totient is φ = 938357568.

The previous prime is 1994010973. The next prime is 1994010989. The reversal of 1994010988 is 8890104991.

It is a super-2 number, since 2×1994010988² = 7952159640529472288, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1994010989) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 861306 + ... + 863617.

Almost surely, 2^1994010988 is an apocalyptic number.

It is an amenable number.

1994010988 is a deficient number, since it is larger than the sum of its proper divisors (1712850688).

1994010988 is a wasteful number, since it uses less digits than its factorization.

1994010988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1724961 (or 1724942 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 49.

The square root of 1994010988 is about 44654.3501576274. The cubic root of 1994010988 is about 1258.6621787773.

The spelling of 1994010988 in words is "one billion, nine hundred ninety-four million, ten thousand, nine hundred eighty-eight".