1646052145 has 8 divisors (see below), whose sum is σ = 1984625280. Its totient is φ = 1310599920.

The previous prime is 1646052139. The next prime is 1646052173. The reversal of 1646052145 is 5412506461.

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

It is not a de Polignac number, because 1646052145 - 2⁵ = 1646052113 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1646052145.

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, 779065 + ... + 781174.

It is an arithmetic number, because the mean of its divisors is an integer number (248078160).

Almost surely, 2^1646052145 is an apocalyptic number.

It is an amenable number.

1646052145 is a deficient number, since it is larger than the sum of its proper divisors (338573135).

1646052145 is a wasteful number, since it uses less digits than its factorization.

1646052145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1560455.

The product of its (nonzero) digits is 28800, while the sum is 34.

The square root of 1646052145 is about 40571.5681851220. The cubic root of 1646052145 is about 1180.7225644907.

The spelling of 1646052145 in words is "one billion, six hundred forty-six million, fifty-two thousand, one hundred forty-five".