2205451856 has 30 divisors (see below), whose sum is σ = 4425517902. Its totient is φ = 1064694400.

The previous prime is 2205451841. The next prime is 2205451861. The reversal of 2205451856 is 6581545022.

It can be written as a sum of positive squares in 3 ways, for example, as 361608256 + 1843843600 = 19016^2 + 42940^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 68495 + ... + 95406.

Almost surely, 2^2205451856 is an apocalyptic number.

It is an amenable number.

2205451856 is an abundant number, since it is smaller than the sum of its proper divisors (2220066046).

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

2205451856 is a wasteful number, since it uses less digits than its factorization.

2205451856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163967 (or 163932 counting only the distinct ones).

The product of its (nonzero) digits is 96000, while the sum is 38.

The square root of 2205451856 is about 46962.2386178513. The cubic root of 2205451856 is about 1301.6648996078.

Adding to 2205451856 its reverse (6581545022), we get a palindrome (8786996878).

It can be divided in two parts, 2205 and 451856, that multiplied together give a triangular number (996342480 = T₄₄₆₃₉).

The spelling of 2205451856 in words is "two billion, two hundred five million, four hundred fifty-one thousand, eight hundred fifty-six".