1606955953 has 2 divisors, whose sum is σ = 1606955954. Its totient is φ = 1606955952.

The previous prime is 1606955941. The next prime is 1606955969. The reversal of 1606955953 is 3595596061.

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., 889948224 + 717007729 = 29832^2 + 26777^2 .

It is a cyclic number.

It is not a de Polignac number, because 1606955953 - 2⁵ = 1606955921 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1606955897 and 1606955906.

It is not a weakly prime, because it can be changed into another prime (1606905953) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 803477976 + 803477977.

It is an arithmetic number, because the mean of its divisors is an integer number (803477977).

Almost surely, 2^1606955953 is an apocalyptic number.

It is an amenable number.

1606955953 is a deficient number, since it is larger than the sum of its proper divisors (1).

1606955953 is an equidigital number, since it uses as much as digits as its factorization.

1606955953 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1093500, while the sum is 49.

The square root of 1606955953 is about 40086.8551148628. The cubic root of 1606955953 is about 1171.2995891237.

The spelling of 1606955953 in words is "one billion, six hundred six million, nine hundred fifty-five thousand, nine hundred fifty-three".