2205409698 has 18 divisors (see below), whose sum is σ = 4778819409. Its totient is φ = 735070152.

The previous prime is 2205409691. The next prime is 2205409727. The reversal of 2205409698 is 8969045022.

It can be written as a sum of positive squares in 2 ways, for example, as 1744148169 + 461261529 = 41763^2 + 21477^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=33207.

It is a super-4 number, since 4×2205409698⁴ (a number of 38 digits) contains 4444 as substring.

It is not an unprimeable number, because it can be changed into a prime (2205409691) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 193708 + ... + 204776.

Almost surely, 2^2205409698 is an apocalyptic number.

2205409698 is an abundant number, since it is smaller than the sum of its proper divisors (2573409711).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2205409698 is an frugal number, since it uses more digits than its factorization.

2205409698 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22146 (or 11074 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 45.

The square root of 2205409698 is about 46961.7897657234. The cubic root of 2205409698 is about 1301.6566056251.

The spelling of 2205409698 in words is "two billion, two hundred five million, four hundred nine thousand, six hundred ninety-eight".