1813866048 has 140 divisors (see below), whose sum is σ = 5550806272. Its totient is φ = 585066240.

The previous prime is 1813866037. The next prime is 1813866053. The reversal of 1813866048 is 8406683181.

It is a happy number.

1813866048 is a `hidden beast` number, since 1 + 8 + 1 + 38 + 6 + 604 + 8 = 666.

It is a super-2 number, since 2×1813866048² = 6580220080174276608, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1813865994 and 1813866012.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 155061 + ... + 166347.

Almost surely, 2^1813866048 is an apocalyptic number.

1813866048 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1813866048, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2775403136).

1813866048 is an abundant number, since it is smaller than the sum of its proper divisors (3736940224).

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

1813866048 is a wasteful number, since it uses less digits than its factorization.

1813866048 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11342 (or 11323 counting only the distinct ones).

The product of its (nonzero) digits is 221184, while the sum is 45.

The square root of 1813866048 is about 42589.5063131753. The cubic root of 1813866048 is about 1219.5559720682. Note that the first 3 decimals are identical.

The spelling of 1813866048 in words is "one billion, eight hundred thirteen million, eight hundred sixty-six thousand, forty-eight".