1645470166 has 8 divisors (see below), whose sum is σ = 2487640320. Its totient is φ = 816256728.

The previous prime is 1645470119. The next prime is 1645470187. The reversal of 1645470166 is 6610745461.

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 polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3238861 + ... + 3239368.

It is an arithmetic number, because the mean of its divisors is an integer number (310955040).

Almost surely, 2^1645470166 is an apocalyptic number.

1645470166 is a deficient number, since it is larger than the sum of its proper divisors (842170154).

1645470166 is a wasteful number, since it uses less digits than its factorization.

1645470166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6478358.

The product of its (nonzero) digits is 120960, while the sum is 40.

The square root of 1645470166 is about 40564.3952993262. The cubic root of 1645470166 is about 1180.5833958058.

The spelling of 1645470166 in words is "one billion, six hundred forty-five million, four hundred seventy thousand, one hundred sixty-six".