1813948080 has 160 divisors (see below), whose sum is σ = 6563579904. Its totient is φ = 405777408.

The previous prime is 1813948079. The next prime is 1813948109. The reversal of 1813948080 is 808493181.

It is a Harshad number since it is a multiple of its sum of digits (42).

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, 67474 + ... + 90446.

Almost surely, 2^1813948080 is an apocalyptic number.

1813948080 is a gapful number since it is divisible by the number (10) 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 1813948080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3281789952).

1813948080 is an abundant number, since it is smaller than the sum of its proper divisors (4749631824).

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

1813948080 is a wasteful number, since it uses less digits than its factorization.

1813948080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23043 (or 23037 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 42.

The square root of 1813948080 is about 42590.4693564182. The cubic root of 1813948080 is about 1219.5743565767.

The spelling of 1813948080 in words is "one billion, eight hundred thirteen million, nine hundred forty-eight thousand, eighty".