1641858343 has 8 divisors (see below), whose sum is σ = 1750150400. Its totient is φ = 1535754168.

The previous prime is 1641858341. The next prime is 1641858349. The reversal of 1641858343 is 3438581461.

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

It is a cyclic number.

It is not a de Polignac number, because 1641858343 - 2¹ = 1641858341 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 1641858343.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1641858341) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 545421 + ... + 548422.

It is an arithmetic number, because the mean of its divisors is an integer number (218768800).

Almost surely, 2^1641858343 is an apocalyptic number.

1641858343 is a deficient number, since it is larger than the sum of its proper divisors (108292057).

1641858343 is a wasteful number, since it uses less digits than its factorization.

1641858343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1093941.

The product of its digits is 276480, while the sum is 43.

The square root of 1641858343 is about 40519.8512213458. The cubic root of 1641858343 is about 1179.7189656784.

The spelling of 1641858343 in words is "one billion, six hundred forty-one million, eight hundred fifty-eight thousand, three hundred forty-three".