1016661049 has 2 divisors, whose sum is σ = 1016661050. Its totient is φ = 1016661048.

The previous prime is 1016661043. The next prime is 1016661059. The reversal of 1016661049 is 9401666101.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 726572025 + 290089024 = 26955^2 + 17032^2 .

It is a cyclic number.

It is not a de Polignac number, because 1016661049 - 2⁷ = 1016660921 is a prime.

It is not a weakly prime, because it can be changed into another prime (1016661043) 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, 508330524 + 508330525.

It is an arithmetic number, because the mean of its divisors is an integer number (508330525).

Almost surely, 2^1016661049 is an apocalyptic number.

It is an amenable number.

1016661049 is a deficient number, since it is larger than the sum of its proper divisors (1).

1016661049 is an equidigital number, since it uses as much as digits as its factorization.

1016661049 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7776, while the sum is 34.

The square root of 1016661049 is about 31885.1226906844. The cubic root of 1016661049 is about 1005.5231219631.

The spelling of 1016661049 in words is "one billion, sixteen million, six hundred sixty-one thousand, forty-nine".