1606234649 has 2 divisors, whose sum is σ = 1606234650. Its totient is φ = 1606234648.

The previous prime is 1606234621. The next prime is 1606234661. The reversal of 1606234649 is 9464326061.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1559065225 + 47169424 = 39485^2 + 6868^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1606234649 is a prime.

It is not a weakly prime, because it can be changed into another prime (1606234699) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 803117324 + 803117325.

It is an arithmetic number, because the mean of its divisors is an integer number (803117325).

Almost surely, 2^1606234649 is an apocalyptic number.

It is an amenable number.

1606234649 is a deficient number, since it is larger than the sum of its proper divisors (1).

1606234649 is an equidigital number, since it uses as much as digits as its factorization.

1606234649 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 186624, while the sum is 41.

The square root of 1606234649 is about 40077.8573404318. The cubic root of 1606234649 is about 1171.1243116540.

The spelling of 1606234649 in words is "one billion, six hundred six million, two hundred thirty-four thousand, six hundred forty-nine".