17868969609 has 16 divisors (see below), whose sum is σ = 24176792640. Its totient is φ = 11738105280.

The previous prime is 17868969589. The next prime is 17868969611. The reversal of 17868969609 is 90696986871.

It is not a de Polignac number, because 17868969609 - 2¹¹ = 17868967561 is a prime.

It is a super-2 number, since 2×17868969609² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (17868961609) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 91767 + ... + 210140.

It is an arithmetic number, because the mean of its divisors is an integer number (1511049540).

Almost surely, 2^17868969609 is an apocalyptic number.

It is an amenable number.

17868969609 is a deficient number, since it is larger than the sum of its proper divisors (6307823031).

17868969609 is a wasteful number, since it uses less digits than its factorization.

17868969609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 302200.

The product of its (nonzero) digits is 70543872, while the sum is 69.

The spelling of 17868969609 in words is "seventeen billion, eight hundred sixty-eight million, nine hundred sixty-nine thousand, six hundred nine".