1813125008 has 40 divisors (see below), whose sum is σ = 3825350400. Its totient is φ = 829229184.

The previous prime is 1813125007. The next prime is 1813125053. The reversal of 1813125008 is 8005213181.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is not an unprimeable number, because it can be changed into a prime (1813125007) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 94016 + ... + 111647.

It is an arithmetic number, because the mean of its divisors is an integer number (95633760).

Almost surely, 2^1813125008 is an apocalyptic number.

It is an amenable number.

1813125008 is an abundant number, since it is smaller than the sum of its proper divisors (2012225392).

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

1813125008 is a wasteful number, since it uses less digits than its factorization.

1813125008 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 205719 (or 205713 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 29.

The square root of 1813125008 is about 42580.8056288276. The cubic root of 1813125008 is about 1219.3898696047.

Adding to 1813125008 its reverse (8005213181), we get a palindrome (9818338189).

The spelling of 1813125008 in words is "one billion, eight hundred thirteen million, one hundred twenty-five thousand, eight".