1671369984 has 72 divisors (see below), whose sum is σ = 4942555520. Its totient is φ = 557121024.

The previous prime is 1671369949. The next prime is 1671370013. The reversal of 1671369984 is 4899631761.

It is a tau number, because it is divible by the number of its divisors (72).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a self number, because there is not a number n which added to its sum of digits gives 1671369984.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 113992 + ... + 127815.

Almost surely, 2^1671369984 is an apocalyptic number.

It is an amenable number.

1671369984 is an abundant number, since it is smaller than the sum of its proper divisors (3271185536).

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

1671369984 is an equidigital number, since it uses as much as digits as its factorization.

1671369984 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 241832 (or 241812 counting only the distinct ones).

The product of its digits is 1959552, while the sum is 54.

The square root of 1671369984 is about 40882.3921022242. The cubic root of 1671369984 is about 1186.7453338975.

The spelling of 1671369984 in words is "one billion, six hundred seventy-one million, three hundred sixty-nine thousand, nine hundred eighty-four".