2198472191 has 4 divisors (see below), whose sum is σ = 2199022152. Its totient is φ = 2197922232.

The previous prime is 2198472127. The next prime is 2198472209. The reversal of 2198472191 is 1912748912.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2198472191 - 2⁶ = 2198472127 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 (2198472091) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 268940 + ... + 276993.

It is an arithmetic number, because the mean of its divisors is an integer number (549755538).

Almost surely, 2^2198472191 is an apocalyptic number.

2198472191 is a deficient number, since it is larger than the sum of its proper divisors (549961).

2198472191 is an equidigital number, since it uses as much as digits as its factorization.

2198472191 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 549960.

The product of its digits is 72576, while the sum is 44.

The square root of 2198472191 is about 46887.8682710144. The cubic root of 2198472191 is about 1300.2903081436.

The spelling of 2198472191 in words is "two billion, one hundred ninety-eight million, four hundred seventy-two thousand, one hundred ninety-one".