1668116450 has 96 divisors (see below), whose sum is σ = 4165983360. Its totient is φ = 479923200.

The previous prime is 1668116393. The next prime is 1668116459. The reversal of 1668116450 is 546118661.

It is a super-2 number, since 2×1668116450² = 5565224981521205000, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1668116459) 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 47 ways as a sum of consecutive naturals, for example, 33386 + ... + 66714.

It is an arithmetic number, because the mean of its divisors is an integer number (43395660).

Almost surely, 2^1668116450 is an apocalyptic number.

1668116450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1668116450 is an abundant number, since it is smaller than the sum of its proper divisors (2497866910).

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

1668116450 is a wasteful number, since it uses less digits than its factorization.

1668116450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33372 (or 33367 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 38.

The square root of 1668116450 is about 40842.5813337012. The cubic root of 1668116450 is about 1185.9747835051.

The spelling of 1668116450 in words is "one billion, six hundred sixty-eight million, one hundred sixteen thousand, four hundred fifty".