1660656160 has 48 divisors (see below), whose sum is σ = 3939026112. Its totient is φ = 661600000.

The previous prime is 1660656139. The next prime is 1660656209. The reversal of 1660656160 is 616560661.

It is a Smith number, since the sum of its digits (37) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19485 + ... + 60835.

It is an arithmetic number, because the mean of its divisors is an integer number (82063044).

Almost surely, 2^1660656160 is an apocalyptic number.

1660656160 is a gapful number since it is divisible by the number (10) 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 1660656160, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1969513056).

1660656160 is an abundant number, since it is smaller than the sum of its proper divisors (2278369952).

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

1660656160 is a wasteful number, since it uses less digits than its factorization.

1660656160 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41617 (or 41609 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 37.

The square root of 1660656160 is about 40751.1491862500. The cubic root of 1660656160 is about 1184.2041360345.

It can be divided in two parts, 166065 and 6160, that added together give a square (172225 = 415²).

The spelling of 1660656160 in words is "one billion, six hundred sixty million, six hundred fifty-six thousand, one hundred sixty".