17857034449 has 2 divisors, whose sum is σ = 17857034450. Its totient is φ = 17857034448.

The previous prime is 17857034443. The next prime is 17857034471. The reversal of 17857034449 is 94443075871.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14934550849 + 2922483600 = 122207^2 + 54060^2 .

It is a cyclic number.

It is not a de Polignac number, because 17857034449 - 2¹⁵ = 17857001681 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 17857034396 and 17857034405.

It is not a weakly prime, because it can be changed into another prime (17857034443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8928517224 + 8928517225.

It is an arithmetic number, because the mean of its divisors is an integer number (8928517225).

Almost surely, 2^17857034449 is an apocalyptic number.

It is an amenable number.

17857034449 is a deficient number, since it is larger than the sum of its proper divisors (1).

17857034449 is an equidigital number, since it uses as much as digits as its factorization.

17857034449 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3386880, while the sum is 52.

The spelling of 17857034449 in words is "seventeen billion, eight hundred fifty-seven million, thirty-four thousand, four hundred forty-nine".