1671909696 has 84 divisors (see below), whose sum is σ = 4798089972. Its totient is φ = 556621824.

The previous prime is 1671909691. The next prime is 1671909697. The reversal of 1671909696 is 6969091761.

It can be written as a sum of positive squares in 2 ways, for example, as 1313337600 + 358572096 = 36240^2 + 18936^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1671909691) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 734416 + ... + 736688.

Almost surely, 2^1671909696 is an apocalyptic number.

1671909696 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1671909696, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2399044986).

1671909696 is an abundant number, since it is smaller than the sum of its proper divisors (3126180276).

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

1671909696 is a wasteful number, since it uses less digits than its factorization.

1671909696 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3568 (or 3555 counting only the distinct ones).

The product of its (nonzero) digits is 1102248, while the sum is 54.

The square root of 1671909696 is about 40888.9923573570. The cubic root of 1671909696 is about 1186.8730598096.

The spelling of 1671909696 in words is "one billion, six hundred seventy-one million, nine hundred nine thousand, six hundred ninety-six".