2190198605 has 16 divisors (see below), whose sum is σ = 3039894144. Its totient is φ = 1483753920.

The previous prime is 2190198583. The next prime is 2190198613. The reversal of 2190198605 is 5068910912.

It is a happy number.

It is not a de Polignac number, because 2190198605 - 2⁶ = 2190198541 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 374066 + ... + 379875.

It is an arithmetic number, because the mean of its divisors is an integer number (189993384).

Almost surely, 2^2190198605 is an apocalyptic number.

It is an amenable number.

2190198605 is a deficient number, since it is larger than the sum of its proper divisors (849695539).

2190198605 is an equidigital number, since it uses as much as digits as its factorization.

2190198605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 754036.

The product of its (nonzero) digits is 38880, while the sum is 41.

The square root of 2190198605 is about 46799.5577436369. The cubic root of 2190198605 is about 1298.6571152659.

The spelling of 2190198605 in words is "two billion, one hundred ninety million, one hundred ninety-eight thousand, six hundred five".