1618617029 has 2 divisors, whose sum is σ = 1618617030. Its totient is φ = 1618617028.

The previous prime is 1618616977. The next prime is 1618617031. The reversal of 1618617029 is 9207168161.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1103236225 + 515380804 = 33215^2 + 22702^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1618617029 is a prime.

Together with 1618617031, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1618617079) 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, 809308514 + 809308515.

It is an arithmetic number, because the mean of its divisors is an integer number (809308515).

Almost surely, 2^1618617029 is an apocalyptic number.

It is an amenable number.

1618617029 is a deficient number, since it is larger than the sum of its proper divisors (1).

1618617029 is an equidigital number, since it uses as much as digits as its factorization.

1618617029 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36288, while the sum is 41.

The square root of 1618617029 is about 40232.0398314577. The cubic root of 1618617029 is about 1174.1259905106.

The spelling of 1618617029 in words is "one billion, six hundred eighteen million, six hundred seventeen thousand, twenty-nine".