1613554009 has 2 divisors, whose sum is σ = 1613554010. Its totient is φ = 1613554008.

The previous prime is 1613554001. The next prime is 1613554027. The reversal of 1613554009 is 9004553161.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 854275984 + 759278025 = 29228^2 + 27555^2 .

It is an emirp because it is prime and its reverse (9004553161) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1613554009 - 2³ = 1613554001 is a prime.

It is not a weakly prime, because it can be changed into another prime (1613554001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 806777004 + 806777005.

It is an arithmetic number, because the mean of its divisors is an integer number (806777005).

Almost surely, 2^1613554009 is an apocalyptic number.

It is an amenable number.

1613554009 is a deficient number, since it is larger than the sum of its proper divisors (1).

1613554009 is an equidigital number, since it uses as much as digits as its factorization.

1613554009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16200, while the sum is 34.

The square root of 1613554009 is about 40169.0678134308. The cubic root of 1613554009 is about 1172.9004932079.

The spelling of 1613554009 in words is "one billion, six hundred thirteen million, five hundred fifty-four thousand, nine".