1666498176 has 192 divisors, whose sum is σ = 5598478080. Its totient is φ = 465905664.

The previous prime is 1666498159. The next prime is 1666498187. The reversal of 1666498176 is 6718946661.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (192).

It is a super-2 number, since 2×1666498176² = 5554432341222653952, which contains 22 as substring.

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 376810 + ... + 381206.

It is an arithmetic number, because the mean of its divisors is an integer number (29158740).

Almost surely, 2^1666498176 is an apocalyptic number.

1666498176 is a gapful number since it is divisible by the number (16) 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 1666498176, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2799239040).

1666498176 is an abundant number, since it is smaller than the sum of its proper divisors (3931979904).

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

1666498176 is a wasteful number, since it uses less digits than its factorization.

1666498176 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4471 (or 4456 counting only the distinct ones).

The product of its digits is 2612736, while the sum is 54.

The square root of 1666498176 is about 40822.7654134308. The cubic root of 1666498176 is about 1185.5911465953.

The spelling of 1666498176 in words is "one billion, six hundred sixty-six million, four hundred ninety-eight thousand, one hundred seventy-six".