1616843117 has 2 divisors, whose sum is σ = 1616843118. Its totient is φ = 1616843116.

The previous prime is 1616843093. The next prime is 1616843141. The reversal of 1616843117 is 7113486161.

It is a balanced prime because it is at equal distance from previous prime (1616843093) and next prime (1616843141).

It can be written as a sum of positive squares in only one way, i.e., 1051640041 + 565203076 = 32429^2 + 23774^2 .

It is a cyclic number.

It is not a de Polignac number, because 1616843117 - 2²⁸ = 1348407661 is a prime.

It is a super-2 number, since 2×1616843117² = 5228363329980551378, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1616843017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 808421558 + 808421559.

It is an arithmetic number, because the mean of its divisors is an integer number (808421559).

Almost surely, 2^1616843117 is an apocalyptic number.

It is an amenable number.

1616843117 is a deficient number, since it is larger than the sum of its proper divisors (1).

1616843117 is an equidigital number, since it uses as much as digits as its factorization.

1616843117 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 24192, while the sum is 38.

The square root of 1616843117 is about 40209.9877766706. The cubic root of 1616843117 is about 1173.6969086699.

The spelling of 1616843117 in words is "one billion, six hundred sixteen million, eight hundred forty-three thousand, one hundred seventeen".