1643160049 has 4 divisors (see below), whose sum is σ = 1643406336. Its totient is φ = 1642913764.

The previous prime is 1643160023. The next prime is 1643160061. The reversal of 1643160049 is 9400613461.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1643160049 - 2⁵ = 1643160017 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1643159996 and 1643160023.

It is not an unprimeable number, because it can be changed into a prime (1643160019) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 112849 + ... + 126574.

It is an arithmetic number, because the mean of its divisors is an integer number (410851584).

Almost surely, 2^1643160049 is an apocalyptic number.

It is an amenable number.

1643160049 is a deficient number, since it is larger than the sum of its proper divisors (246287).

1643160049 is an equidigital number, since it uses as much as digits as its factorization.

1643160049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 246286.

The product of its (nonzero) digits is 15552, while the sum is 34.

The square root of 1643160049 is about 40535.9106102231. The cubic root of 1643160049 is about 1180.0306534697.

The spelling of 1643160049 in words is "one billion, six hundred forty-three million, one hundred sixty thousand, forty-nine".