2197939305 has 16 divisors (see below), whose sum is σ = 3611749824. Its totient is φ = 1140552000.

The previous prime is 2197939273. The next prime is 2197939313. The reversal of 2197939305 is 5039397912.

It is not a de Polignac number, because 2197939305 - 2⁵ = 2197939273 is a prime.

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, 1979571 + ... + 1980680.

It is an arithmetic number, because the mean of its divisors is an integer number (225734364).

Almost surely, 2^2197939305 is an apocalyptic number.

It is an amenable number.

2197939305 is a deficient number, since it is larger than the sum of its proper divisors (1413810519).

2197939305 is a wasteful number, since it uses less digits than its factorization.

2197939305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3960296.

The product of its (nonzero) digits is 459270, while the sum is 48.

The square root of 2197939305 is about 46882.1853692850. The cubic root of 2197939305 is about 1300.1852408616.

The spelling of 2197939305 in words is "two billion, one hundred ninety-seven million, nine hundred thirty-nine thousand, three hundred five".