1608399854 has 16 divisors (see below), whose sum is σ = 2428234368. Its totient is φ = 798999552.

The previous prime is 1608399833. The next prime is 1608399889. The reversal of 1608399854 is 4589938061.

It is a Smith number, since the sum of its digits (53) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 1608399796 and 1608399805.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 359459 + ... + 363905.

It is an arithmetic number, because the mean of its divisors is an integer number (151764648).

Almost surely, 2^1608399854 is an apocalyptic number.

1608399854 is a deficient number, since it is larger than the sum of its proper divisors (819834514).

1608399854 is a wasteful number, since it uses less digits than its factorization.

1608399854 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5579.

The product of its (nonzero) digits is 1866240, while the sum is 53.

The square root of 1608399854 is about 40104.8607278469. The cubic root of 1608399854 is about 1171.6503007394.

The spelling of 1608399854 in words is "one billion, six hundred eight million, three hundred ninety-nine thousand, eight hundred fifty-four".