1660448182818 has 128 divisors (see below), whose sum is σ = 3633149064960. Its totient is φ = 504092160000.

The previous prime is 1660448182759. The next prime is 1660448182849. The reversal of 1660448182818 is 8182818440661.

It is a happy number.

It is a super-2 number, since 2×1660448182818² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 221951638 + ... + 221959118.

It is an arithmetic number, because the mean of its divisors is an integer number (28383977070).

Almost surely, 2^{1660448182818} is an apocalyptic number.

1660448182818 is an abundant number, since it is smaller than the sum of its proper divisors (1972700882142).

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

1660448182818 is a wasteful number, since it uses less digits than its factorization.

1660448182818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8164.

The product of its (nonzero) digits is 4718592, while the sum is 57.

The spelling of 1660448182818 in words is "one trillion, six hundred sixty billion, four hundred forty-eight million, one hundred eighty-two thousand, eight hundred eighteen".