17900945197 has 8 divisors (see below), whose sum is σ = 18131610240. Its totient is φ = 17670382080.

The previous prime is 17900945191. The next prime is 17900945213. The reversal of 17900945197 is 79154900971.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 17900945197 - 2³ = 17900945189 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (17900945191) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 366573 + ... + 412525.

It is an arithmetic number, because the mean of its divisors is an integer number (2266451280).

Almost surely, 2^17900945197 is an apocalyptic number.

It is an amenable number.

17900945197 is a deficient number, since it is larger than the sum of its proper divisors (230665043).

17900945197 is an equidigital number, since it uses as much as digits as its factorization.

17900945197 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50963.

The product of its (nonzero) digits is 714420, while the sum is 52.

The spelling of 17900945197 in words is "seventeen billion, nine hundred million, nine hundred forty-five thousand, one hundred ninety-seven".