1813450338 has 96 divisors (see below), whose sum is σ = 4679700480. Its totient is φ = 496614240.

The previous prime is 1813450297. The next prime is 1813450349. The reversal of 1813450338 is 8330543181.

1813450338 is a `hidden beast` number, since 18 + 134 + 503 + 3 + 8 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 415773 + ... + 420111.

It is an arithmetic number, because the mean of its divisors is an integer number (48746880).

Almost surely, 2^1813450338 is an apocalyptic number.

1813450338 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1813450338, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2339850240).

1813450338 is an abundant number, since it is smaller than the sum of its proper divisors (2866250142).

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

1813450338 is a wasteful number, since it uses less digits than its factorization.

1813450338 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4492 (or 4489 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

The square root of 1813450338 is about 42584.6256059625. The cubic root of 1813450338 is about 1219.4627971708.

The spelling of 1813450338 in words is "one billion, eight hundred thirteen million, four hundred fifty thousand, three hundred thirty-eight".