1680144454 has 8 divisors (see below), whose sum is σ = 2520473328. Its totient is φ = 839986680.

The previous prime is 1680144409. The next prime is 1680144491. The reversal of 1680144454 is 4544410861.

It is a sphenic number, since it is the product of 3 distinct primes.

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 3 ways as a sum of consecutive naturals, for example, 14482 + ... + 59749.

It is an arithmetic number, because the mean of its divisors is an integer number (315059166).

Almost surely, 2^1680144454 is an apocalyptic number.

1680144454 is a deficient number, since it is larger than the sum of its proper divisors (840328874).

1680144454 is a wasteful number, since it uses less digits than its factorization.

1680144454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85550.

The product of its (nonzero) digits is 61440, while the sum is 37.

The square root of 1680144454 is about 40989.5651843247. The cubic root of 1680144454 is about 1188.8184619294.

The spelling of 1680144454 in words is "one billion, six hundred eighty million, one hundred forty-four thousand, four hundred fifty-four".