1669414400 has 60 divisors (see below), whose sum is σ = 4136136312. Its totient is φ = 667760640.

The previous prime is 1669414391. The next prime is 1669414403. The reversal of 1669414400 is 44149661.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1669414403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 52412 + ... + 78011.

Almost surely, 2^1669414400 is an apocalyptic number.

1669414400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1669414400 is an abundant number, since it is smaller than the sum of its proper divisors (2466721912).

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

1669414400 is an equidigital number, since it uses as much as digits as its factorization.

1669414400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130451 (or 130430 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 35.

The square root of 1669414400 is about 40858.4679105813. The cubic root of 1669414400 is about 1186.2823033816.

The spelling of 1669414400 in words is "one billion, six hundred sixty-nine million, four hundred fourteen thousand, four hundred".