2171993097 has 8 divisors (see below), whose sum is σ = 2896591456. Its totient is φ = 1447695072.

The previous prime is 2171993051. The next prime is 2171993099. The reversal of 2171993097 is 7903991712.

It is a happy number.

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

It is not a de Polignac number, because 2171993097 - 2¹⁰ = 2171992073 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2171993099) 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, 57628 + ... + 87549.

It is an arithmetic number, because the mean of its divisors is an integer number (362073932).

Almost surely, 2^2171993097 is an apocalyptic number.

It is an amenable number.

2171993097 is a deficient number, since it is larger than the sum of its proper divisors (724598359).

2171993097 is a wasteful number, since it uses less digits than its factorization.

2171993097 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 150167.

The product of its (nonzero) digits is 214326, while the sum is 48.

The square root of 2171993097 is about 46604.6467318442. The cubic root of 2171993097 is about 1295.0488390122.

The spelling of 2171993097 in words is "two billion, one hundred seventy-one million, nine hundred ninety-three thousand, ninety-seven".