1659047243 has 24 divisors (see below), whose sum is σ = 2016322560. Its totient is φ = 1359484560.

The previous prime is 1659047237. The next prime is 1659047251. The reversal of 1659047243 is 3427409561.

It is not a de Polignac number, because 1659047243 - 2⁶ = 1659047179 is a prime.

It is a hoax number, since the sum of its digits (41) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 1659047243.

It is not an unprimeable number, because it can be changed into a prime (1659047443) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 119498 + ... + 132656.

It is an arithmetic number, because the mean of its divisors is an integer number (84013440).

Almost surely, 2^1659047243 is an apocalyptic number.

1659047243 is a deficient number, since it is larger than the sum of its proper divisors (357275317).

1659047243 is a wasteful number, since it uses less digits than its factorization.

1659047243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13287 (or 13280 counting only the distinct ones).

The product of its (nonzero) digits is 181440, while the sum is 41.

The square root of 1659047243 is about 40731.4036463267. The cubic root of 1659047243 is about 1183.8215760457.

The spelling of 1659047243 in words is "one billion, six hundred fifty-nine million, forty-seven thousand, two hundred forty-three".