1808187130 has 16 divisors (see below), whose sum is σ = 3259226880. Its totient is φ = 722277072.

The previous prime is 1808187103. The next prime is 1808187137. The reversal of 1808187130 is 317818081.

It is a self number, because there is not a number n which added to its sum of digits gives 1808187130.

It is not an unprimeable number, because it can be changed into a prime (1808187137) 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, 117090 + ... + 131629.

It is an arithmetic number, because the mean of its divisors is an integer number (203701680).

Almost surely, 2^1808187130 is an apocalyptic number.

1808187130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1808187130 is a deficient number, since it is larger than the sum of its proper divisors (1451039750).

1808187130 is a wasteful number, since it uses less digits than its factorization.

1808187130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 249453.

The product of its (nonzero) digits is 10752, while the sum is 37.

The square root of 1808187130 is about 42522.7836577052. The cubic root of 1808187130 is about 1218.2818980587.

The spelling of 1808187130 in words is "one billion, eight hundred eight million, one hundred eighty-seven thousand, one hundred thirty".