1601613089 has 2 divisors, whose sum is σ = 1601613090. Its totient is φ = 1601613088.

The previous prime is 1601613077. The next prime is 1601613103. The reversal of 1601613089 is 9803161061.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 918574864 + 683038225 = 30308^2 + 26135^2 .

It is a cyclic number.

It is not a de Polignac number, because 1601613089 - 2⁸ = 1601612833 is a prime.

It is a super-2 number, since 2×1601613089² = 5130328973712243842, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1601613289) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 800806544 + 800806545.

It is an arithmetic number, because the mean of its divisors is an integer number (800806545).

Almost surely, 2^1601613089 is an apocalyptic number.

It is an amenable number.

1601613089 is a deficient number, since it is larger than the sum of its proper divisors (1).

1601613089 is an equidigital number, since it uses as much as digits as its factorization.

1601613089 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7776, while the sum is 35.

The square root of 1601613089 is about 40020.1585329194. The cubic root of 1601613089 is about 1170.0000216719. Note that the first 4 decimals are identical.

The spelling of 1601613089 in words is "one billion, six hundred one million, six hundred thirteen thousand, eighty-nine".