1660288898 has 8 divisors (see below), whose sum is σ = 2492490108. Its totient is φ = 829458864.

The previous prime is 1660288897. The next prime is 1660288919. The reversal of 1660288898 is 8988820661.

It can be written as a sum of positive squares in 2 ways, for example, as 1636445209 + 23843689 = 40453^2 + 4883^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (1660288897) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 339761 + ... + 344612.

Almost surely, 2^1660288898 is an apocalyptic number.

1660288898 is a deficient number, since it is larger than the sum of its proper divisors (832201210).

1660288898 is a wasteful number, since it uses less digits than its factorization.

1660288898 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 685588.

The product of its (nonzero) digits is 2654208, while the sum is 56.

The square root of 1660288898 is about 40746.6427819520. The cubic root of 1660288898 is about 1184.1168321412.

The spelling of 1660288898 in words is "one billion, six hundred sixty million, two hundred eighty-eight thousand, eight hundred ninety-eight".