1667130720 has 96 divisors (see below), whose sum is σ = 5257133280. Its totient is φ = 444088320.

The previous prime is 1667130709. The next prime is 1667130733. The reversal of 1667130720 is 270317661.

It is a tau number, because it is divible by the number of its divisors (96).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 800080 + ... + 802160.

It is an arithmetic number, because the mean of its divisors is an integer number (54761805).

Almost surely, 2^1667130720 is an apocalyptic number.

1667130720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1667130720 is an abundant number, since it is smaller than the sum of its proper divisors (3590002560).

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

1667130720 is a wasteful number, since it uses less digits than its factorization.

1667130720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3768 (or 3760 counting only the distinct ones).

The product of its (nonzero) digits is 10584, while the sum is 33.

The square root of 1667130720 is about 40830.5121202270. The cubic root of 1667130720 is about 1185.7411304984.

The spelling of 1667130720 in words is "one billion, six hundred sixty-seven million, one hundred thirty thousand, seven hundred twenty".