1641341409 has 4 divisors (see below), whose sum is σ = 2188455216. Its totient is φ = 1094227604.

The previous prime is 1641341389. The next prime is 1641341413. The reversal of 1641341409 is 9041431461.

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, and also an emirpimes, since its reverse is a distinct semiprime: 9041431461 = 3 ⋅3013810487.

It is a cyclic number.

It is not a de Polignac number, because 1641341409 - 2⁷ = 1641341281 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1641341409.

It is not an unprimeable number, because it can be changed into a prime (1641341489) 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, 273556899 + ... + 273556904.

It is an arithmetic number, because the mean of its divisors is an integer number (547113804).

Almost surely, 2^1641341409 is an apocalyptic number.

It is an amenable number.

1641341409 is a deficient number, since it is larger than the sum of its proper divisors (547113807).

1641341409 is an equidigital number, since it uses as much as digits as its factorization.

1641341409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 547113806.

The product of its (nonzero) digits is 10368, while the sum is 33.

The square root of 1641341409 is about 40513.4719445273. The cubic root of 1641341409 is about 1179.5951423983.

The spelling of 1641341409 in words is "one billion, six hundred forty-one million, three hundred forty-one thousand, four hundred nine".