1643014465 has 16 divisors (see below), whose sum is σ = 2000775168. Its totient is φ = 1295059456.

The previous prime is 1643014441. The next prime is 1643014481. The reversal of 1643014465 is 5644103461.

It is a cyclic number.

It is not a de Polignac number, because 1643014465 - 2¹⁹ = 1642490177 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1643014465.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 153777 + ... + 164113.

It is an arithmetic number, because the mean of its divisors is an integer number (125048448).

Almost surely, 2^1643014465 is an apocalyptic number.

It is an amenable number.

1643014465 is a deficient number, since it is larger than the sum of its proper divisors (357760703).

1643014465 is a wasteful number, since it uses less digits than its factorization.

1643014465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10808.

The product of its (nonzero) digits is 34560, while the sum is 34.

The square root of 1643014465 is about 40534.1148293632. The cubic root of 1643014465 is about 1179.9958021971.

The spelling of 1643014465 in words is "one billion, six hundred forty-three million, fourteen thousand, four hundred sixty-five".