1606262469989 has 2 divisors, whose sum is σ = 1606262469990. Its totient is φ = 1606262469988.

The previous prime is 1606262469971. The next prime is 1606262470013. The reversal of 1606262469989 is 9899642626061.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1604422488964 + 1839981025 = 1266658^2 + 42895^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1606262469989 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1606262469949) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 803131234994 + 803131234995.

It is an arithmetic number, because the mean of its divisors is an integer number (803131234995).

Almost surely, 2^{1606262469989} is an apocalyptic number.

It is an amenable number.

1606262469989 is a deficient number, since it is larger than the sum of its proper divisors (1).

1606262469989 is an equidigital number, since it uses as much as digits as its factorization.

1606262469989 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 120932352, while the sum is 68.

The spelling of 1606262469989 in words is "one trillion, six hundred six billion, two hundred sixty-two million, four hundred sixty-nine thousand, nine hundred eighty-nine".