1808998854 has 64 divisors (see below), whose sum is σ = 4111887360. Its totient is φ = 525968640.

The previous prime is 1808998853. The next prime is 1808998871. The reversal of 1808998854 is 4588998081.

1808998854 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1808998853) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 675939 + ... + 678609.

It is an arithmetic number, because the mean of its divisors is an integer number (64248240).

Almost surely, 2^1808998854 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1808998854, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2055943680).

1808998854 is an abundant number, since it is smaller than the sum of its proper divisors (2302888506).

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

1808998854 is a wasteful number, since it uses less digits than its factorization.

1808998854 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3165.

The product of its (nonzero) digits is 6635520, while the sum is 60.

The square root of 1808998854 is about 42532.3271641701. The cubic root of 1808998854 is about 1218.4641728349.

The spelling of 1808998854 in words is "one billion, eight hundred eight million, nine hundred ninety-eight thousand, eight hundred fifty-four".