1604456166 has 8 divisors (see below), whose sum is σ = 3208912344. Its totient is φ = 534818720.

The previous prime is 1604456137. The next prime is 1604456173. The reversal of 1604456166 is 6616544061.

It is a happy number.

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

1604456166 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 133704675 + ... + 133704686.

It is an arithmetic number, because the mean of its divisors is an integer number (401114043).

Almost surely, 2^1604456166 is an apocalyptic number.

1604456166 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1604456166 is a wasteful number, since it uses less digits than its factorization.

1604456166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 267409366.

The product of its (nonzero) digits is 103680, while the sum is 39.

The square root of 1604456166 is about 40055.6633449004. The cubic root of 1604456166 is about 1170.6919144986.

The spelling of 1604456166 in words is "one billion, six hundred four million, four hundred fifty-six thousand, one hundred sixty-six".