1660529472 has 112 divisors (see below), whose sum is σ = 5285475840. Its totient is φ = 449459712.

The previous prime is 1660529471. The next prime is 1660529509. The reversal of 1660529472 is 2749250661.

It is a tau number, because it is divible by the number of its divisors (112).

It is a hoax number, since the sum of its digits (42) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1660529471) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6978 + ... + 58049.

Almost surely, 2^1660529472 is an apocalyptic number.

1660529472 is a gapful number since it is divisible by the number (12) 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 1660529472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2642737920).

1660529472 is an abundant number, since it is smaller than the sum of its proper divisors (3624946368).

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

1660529472 is a wasteful number, since it uses less digits than its factorization.

1660529472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65068 (or 65058 counting only the distinct ones).

The product of its (nonzero) digits is 181440, while the sum is 42.

The square root of 1660529472 is about 40749.5947464512. The cubic root of 1660529472 is about 1184.1740217796.

The spelling of 1660529472 in words is "one billion, six hundred sixty million, five hundred twenty-nine thousand, four hundred seventy-two".