1667446049 has 2 divisors, whose sum is σ = 1667446050. Its totient is φ = 1667446048.

The previous prime is 1667446009. The next prime is 1667446087. The reversal of 1667446049 is 9406447661.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1593606400 + 73839649 = 39920^2 + 8593^2 .

It is a cyclic number.

It is not a de Polignac number, because 1667446049 - 2¹² = 1667441953 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1667445994 and 1667446012.

It is not a weakly prime, because it can be changed into another prime (1667446009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 833723024 + 833723025.

It is an arithmetic number, because the mean of its divisors is an integer number (833723025).

Almost surely, 2^1667446049 is an apocalyptic number.

It is an amenable number.

1667446049 is a deficient number, since it is larger than the sum of its proper divisors (1).

1667446049 is an equidigital number, since it uses as much as digits as its factorization.

1667446049 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 870912, while the sum is 47.

The square root of 1667446049 is about 40834.3733758705. The cubic root of 1667446049 is about 1185.8158846832.

The spelling of 1667446049 in words is "one billion, six hundred sixty-seven million, four hundred forty-six thousand, forty-nine".