1659180992 has 84 divisors (see below), whose sum is σ = 3934059696. Its totient is φ = 680064000.

The previous prime is 1659180979. The next prime is 1659180997. The reversal of 1659180992 is 2990819561.

It is a self number, because there is not a number n which added to its sum of digits gives 1659180992.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1659180997) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 233492 + ... + 240492.

It is an arithmetic number, because the mean of its divisors is an integer number (46834044).

Almost surely, 2^1659180992 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1659180992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1967029848).

1659180992 is an abundant number, since it is smaller than the sum of its proper divisors (2274878704).

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

1659180992 is an equidigital number, since it uses as much as digits as its factorization.

1659180992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7066 (or 7033 counting only the distinct ones).

The product of its (nonzero) digits is 349920, while the sum is 50.

The square root of 1659180992 is about 40733.0454545201. The cubic root of 1659180992 is about 1183.8533876167.

The spelling of 1659180992 in words is "one billion, six hundred fifty-nine million, one hundred eighty thousand, nine hundred ninety-two".