1087844243 has 2 divisors, whose sum is σ = 1087844244. Its totient is φ = 1087844242.

The previous prime is 1087844237. The next prime is 1087844287. The reversal of 1087844243 is 3424487801.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1087844243 - 2⁸ = 1087843987 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1087844243.

It is not a weakly prime, because it can be changed into another prime (1087844543) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 543922121 + 543922122.

It is an arithmetic number, because the mean of its divisors is an integer number (543922122).

Almost surely, 2^1087844243 is an apocalyptic number.

1087844243 is a deficient number, since it is larger than the sum of its proper divisors (1).

1087844243 is an equidigital number, since it uses as much as digits as its factorization.

1087844243 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 172032, while the sum is 41.

The square root of 1087844243 is about 32982.4838815999. The cubic root of 1087844243 is about 1028.4635536383.

The spelling of 1087844243 in words is "one billion, eighty-seven million, eight hundred forty-four thousand, two hundred forty-three".