17975451349 has 16 divisors (see below), whose sum is σ = 19132710912. Its totient is φ = 16852773168.

The previous prime is 17975451343. The next prime is 17975451421. The reversal of 17975451349 is 94315457971.

It is a cyclic number.

It is not a de Polignac number, because 17975451349 - 2²¹ = 17973354197 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 17975451349.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (17975451343) 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, 205372 + ... + 279514.

It is an arithmetic number, because the mean of its divisors is an integer number (1195794432).

Almost surely, 2^17975451349 is an apocalyptic number.

It is an amenable number.

17975451349 is a deficient number, since it is larger than the sum of its proper divisors (1157259563).

17975451349 is a wasteful number, since it uses less digits than its factorization.

17975451349 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74376.

The product of its digits is 4762800, while the sum is 55.

The spelling of 17975451349 in words is "seventeen billion, nine hundred seventy-five million, four hundred fifty-one thousand, three hundred forty-nine".