1660450500 has 288 divisors, whose sum is σ = 5576643072. Its totient is φ = 415008000.

The previous prime is 1660450499. The next prime is 1660450553. The reversal of 1660450500 is 50540661.

It is a happy number.

1660450500 is a `hidden beast` number, since 1 + 6 + 604 + 5 + 0 + 50 + 0 = 666.

1660450500 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 6313369 + ... + 6313631.

It is an arithmetic number, because the mean of its divisors is an integer number (19363344).

Almost surely, 2^1660450500 is an apocalyptic number.

1660450500 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 1660450500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2788321536).

1660450500 is an abundant number, since it is smaller than the sum of its proper divisors (3916192572).

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

1660450500 is a wasteful number, since it uses less digits than its factorization.

1660450500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 372 (or 357 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

The square root of 1660450500 is about 40748.6257436984. The cubic root of 1660450500 is about 1184.1552490377.

The spelling of 1660450500 in words is "one billion, six hundred sixty million, four hundred fifty thousand, five hundred".