1613789689 has 2 divisors, whose sum is σ = 1613789690. Its totient is φ = 1613789688.

The previous prime is 1613789663. The next prime is 1613789693. The reversal of 1613789689 is 9869873161.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1555908025 + 57881664 = 39445^2 + 7608^2 .

It is a cyclic number.

It is not a de Polignac number, because 1613789689 - 2⁵ = 1613789657 is a prime.

It is not a weakly prime, because it can be changed into another prime (1613789789) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 806894844 + 806894845.

It is an arithmetic number, because the mean of its divisors is an integer number (806894845).

Almost surely, 2^1613789689 is an apocalyptic number.

It is an amenable number.

1613789689 is a deficient number, since it is larger than the sum of its proper divisors (1).

1613789689 is an equidigital number, since it uses as much as digits as its factorization.

1613789689 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3919104, while the sum is 58.

The square root of 1613789689 is about 40172.0013068804. The cubic root of 1613789689 is about 1172.9575960854.

The spelling of 1613789689 in words is "one billion, six hundred thirteen million, seven hundred eighty-nine thousand, six hundred eighty-nine".