2198548309 has 4 divisors (see below), whose sum is σ = 2203511616. Its totient is φ = 2193585004.

The previous prime is 2198548291. The next prime is 2198548337. The reversal of 2198548309 is 9038458912.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2198548309 - 2⁵ = 2198548277 is a prime.

It is a super-2 number, since 2×2198548309² = 9667229334013518962, which contains 22 as substring.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2198548369) 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, 2480989 + ... + 2481874.

It is an arithmetic number, because the mean of its divisors is an integer number (550877904).

Almost surely, 2^2198548309 is an apocalyptic number.

It is an amenable number.

2198548309 is a deficient number, since it is larger than the sum of its proper divisors (4963307).

2198548309 is an equidigital number, since it uses as much as digits as its factorization.

2198548309 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4963306.

The product of its (nonzero) digits is 622080, while the sum is 49.

The square root of 2198548309 is about 46888.6799664908. The cubic root of 2198548309 is about 1300.3053146795.

The spelling of 2198548309 in words is "two billion, one hundred ninety-eight million, five hundred forty-eight thousand, three hundred nine".