1681033764 has 24 divisors (see below), whose sum is σ = 3940007680. Its totient is φ = 557830944.

The previous prime is 1681033747. The next prime is 1681033769. The reversal of 1681033764 is 4673301861.

It is not an unprimeable number, because it can be changed into a prime (1681033769) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 311419 + ... + 316770.

Almost surely, 2^1681033764 is an apocalyptic number.

It is an amenable number.

1681033764 is an abundant number, since it is smaller than the sum of its proper divisors (2258973916).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1681033764 is a wasteful number, since it uses less digits than its factorization.

1681033764 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 628419 (or 628417 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 39.

The square root of 1681033764 is about 41000.4117540300. The cubic root of 1681033764 is about 1189.0281743872.

The spelling of 1681033764 in words is "one billion, six hundred eighty-one million, thirty-three thousand, seven hundred sixty-four".