1660538850 has 24 divisors (see below), whose sum is σ = 4118136720. Its totient is φ = 442810320.

The previous prime is 1660538849. The next prime is 1660538899. The reversal of 1660538850 is 588350661.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5534980 + ... + 5535279.

It is an arithmetic number, because the mean of its divisors is an integer number (171589030).

Almost surely, 2^1660538850 is an apocalyptic number.

1660538850 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1660538850 is an abundant number, since it is smaller than the sum of its proper divisors (2457597870).

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

1660538850 is a wasteful number, since it uses less digits than its factorization.

1660538850 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11070274 (or 11070269 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 42.

The square root of 1660538850 is about 40749.7098149177. The cubic root of 1660538850 is about 1184.1762510210.

It can be divided in two parts, 16605 and 38850, that added together give a palindrome (55455).

The spelling of 1660538850 in words is "one billion, six hundred sixty million, five hundred thirty-eight thousand, eight hundred fifty".