1959541243 has 8 divisors (see below), whose sum is σ = 2138759280. Its totient is φ = 1780502880.

The previous prime is 1959541237. The next prime is 1959541267. The reversal of 1959541243 is 3421459591.

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 1959541243 - 2¹⁷ = 1959410171 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 1959541243.

It is not an unprimeable number, because it can be changed into a prime (1959541943) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21580 + ... + 66217.

It is an arithmetic number, because the mean of its divisors is an integer number (267344910).

Almost surely, 2^1959541243 is an apocalyptic number.

1959541243 is a deficient number, since it is larger than the sum of its proper divisors (179218037).

1959541243 is a wasteful number, since it uses less digits than its factorization.

1959541243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89837.

The product of its digits is 194400, while the sum is 43.

The square root of 1959541243 is about 44266.7058069606. The cubic root of 1959541243 is about 1251.3673023488.

The spelling of 1959541243 in words is "one billion, nine hundred fifty-nine million, five hundred forty-one thousand, two hundred forty-three".