1661169704 has 16 divisors (see below), whose sum is σ = 3117074400. Its totient is φ = 829949872.

The previous prime is 1661169661. The next prime is 1661169709. The reversal of 1661169704 is 4079611661.

It is not an unprimeable number, because it can be changed into a prime (1661169709) 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 3 ways as a sum of consecutive naturals, for example, 68162 + ... + 89265.

It is an arithmetic number, because the mean of its divisors is an integer number (194817150).

Almost surely, 2^1661169704 is an apocalyptic number.

It is an amenable number.

1661169704 is a deficient number, since it is larger than the sum of its proper divisors (1455904696).

1661169704 is a wasteful number, since it uses less digits than its factorization.

1661169704 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158752 (or 158748 counting only the distinct ones).

The product of its (nonzero) digits is 54432, while the sum is 41.

The square root of 1661169704 is about 40757.4496748754. The cubic root of 1661169704 is about 1184.3261918553.

The spelling of 1661169704 in words is "one billion, six hundred sixty-one million, one hundred sixty-nine thousand, seven hundred four".