17608942381 has 2 divisors, whose sum is σ = 17608942382. Its totient is φ = 17608942380.

The previous prime is 17608942367. The next prime is 17608942411. The reversal of 17608942381 is 18324980671.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16701426756 + 907515625 = 129234^2 + 30125^2 .

It is a cyclic number.

It is not a de Polignac number, because 17608942381 - 2⁵ = 17608942349 is a prime.

It is a super-2 number, since 2×17608942381² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (17608942331) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8804471190 + 8804471191.

It is an arithmetic number, because the mean of its divisors is an integer number (8804471191).

Almost surely, 2^17608942381 is an apocalyptic number.

It is an amenable number.

17608942381 is a deficient number, since it is larger than the sum of its proper divisors (1).

17608942381 is an equidigital number, since it uses as much as digits as its factorization.

17608942381 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 580608, while the sum is 49.

The spelling of 17608942381 in words is "seventeen billion, six hundred eight million, nine hundred forty-two thousand, three hundred eighty-one".