1606267249 has 2 divisors, whose sum is σ = 1606267250. Its totient is φ = 1606267248.

The previous prime is 1606267231. The next prime is 1606267301. The reversal of 1606267249 is 9427626061.

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., 1565626624 + 40640625 = 39568^2 + 6375^2 .

It is a cyclic number.

It is not a de Polignac number, because 1606267249 - 2⁷ = 1606267121 is a prime.

It is not a weakly prime, because it can be changed into another prime (1606267349) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 803133624 + 803133625.

It is an arithmetic number, because the mean of its divisors is an integer number (803133625).

Almost surely, 2^1606267249 is an apocalyptic number.

It is an amenable number.

1606267249 is a deficient number, since it is larger than the sum of its proper divisors (1).

1606267249 is an equidigital number, since it uses as much as digits as its factorization.

1606267249 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 217728, while the sum is 43.

The square root of 1606267249 is about 40078.2640467374. The cubic root of 1606267249 is about 1171.1322346131.

The spelling of 1606267249 in words is "one billion, six hundred six million, two hundred sixty-seven thousand, two hundred forty-nine".