1660511232 has 352 divisors, whose sum is σ = 5404080000. Its totient is φ = 501645312.

The previous prime is 1660511231. The next prime is 1660511257. The reversal of 1660511232 is 2321150661.

1660511232 is a `hidden beast` number, since 16 + 605 + 1 + 12 + 32 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 1660511196 and 1660511205.

It is not an unprimeable number, because it can be changed into a prime (1660511231) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 15233994 + ... + 15234102.

It is an arithmetic number, because the mean of its divisors is an integer number (15352500).

Almost surely, 2^1660511232 is an apocalyptic number.

1660511232 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 1660511232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2702040000).

1660511232 is an abundant number, since it is smaller than the sum of its proper divisors (3743568768).

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

1660511232 is a wasteful number, since it uses less digits than its factorization.

1660511232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 186 (or 162 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 1660511232 is about 40749.3709399299. The cubic root of 1660511232 is about 1184.1696859310.

Adding to 1660511232 its reverse (2321150661), we get a palindrome (3981661893).

The spelling of 1660511232 in words is "one billion, six hundred sixty million, five hundred eleven thousand, two hundred thirty-two".