1016661043 has 2 divisors, whose sum is σ = 1016661044. Its totient is φ = 1016661042.

The previous prime is 1016660989. The next prime is 1016661049. The reversal of 1016661043 is 3401666101.

It is a strong prime.

It is an emirp because it is prime and its reverse (3401666101) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1016661043 is a prime.

It is not a weakly prime, because it can be changed into another prime (1016661049) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 508330521 + 508330522.

It is an arithmetic number, because the mean of its divisors is an integer number (508330522).

Almost surely, 2^1016661043 is an apocalyptic number.

1016661043 is a deficient number, since it is larger than the sum of its proper divisors (1).

1016661043 is an equidigital number, since it uses as much as digits as its factorization.

1016661043 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 1016661043 is about 31885.1225965967. The cubic root of 1016661043 is about 1005.5231199850.

The spelling of 1016661043 in words is "one billion, sixteen million, six hundred sixty-one thousand, forty-three".