1994665072 has 10 divisors (see below), whose sum is σ = 3864663608. Its totient is φ = 997332528.

The previous prime is 1994665051. The next prime is 1994665073. The reversal of 1994665072 is 2705664991.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1994665073) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62333268 + ... + 62333299.

Almost surely, 2^1994665072 is an apocalyptic number.

It is an amenable number.

1994665072 is a deficient number, since it is larger than the sum of its proper divisors (1869998536).

1994665072 is a wasteful number, since it uses less digits than its factorization.

1994665072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124666575 (or 124666569 counting only the distinct ones).

The product of its (nonzero) digits is 816480, while the sum is 49.

The square root of 1994665072 is about 44661.6734124462. The cubic root of 1994665072 is about 1258.7997876464.

The spelling of 1994665072 in words is "one billion, nine hundred ninety-four million, six hundred sixty-five thousand, seventy-two".