2205451854 has 64 divisors (see below), whose sum is σ = 5310074880. Its totient is φ = 675803520.

The previous prime is 2205451841. The next prime is 2205451861. The reversal of 2205451854 is 4581545022.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 11539 + ... + 67409.

It is an arithmetic number, because the mean of its divisors is an integer number (82969920).

Almost surely, 2^2205451854 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2205451854, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2655037440).

2205451854 is an abundant number, since it is smaller than the sum of its proper divisors (3104623026).

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

2205451854 is a wasteful number, since it uses less digits than its factorization.

2205451854 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55942 (or 55936 counting only the distinct ones).

The product of its (nonzero) digits is 64000, while the sum is 36.

The square root of 2205451854 is about 46962.2385965576. The cubic root of 2205451854 is about 1301.6648992143.

Adding to 2205451854 its reverse (4581545022), we get a palindrome (6786996876).

The spelling of 2205451854 in words is "two billion, two hundred five million, four hundred fifty-one thousand, eight hundred fifty-four".