187812157130 has 16 divisors (see below), whose sum is σ = 364066643304. Its totient is φ = 69346027200.

The previous prime is 187812157073. The next prime is 187812157189. The reversal of 187812157130 is 31751218781.

It is a Cunningham number, because it is equal to 433373²+1.

It can be written as a sum of positive squares in 4 ways, for example, as 139402916689 + 48409240441 = 373367^2 + 220021^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 722354321 + ... + 722354580.

Almost surely, 2^187812157130 is an apocalyptic number.

187812157130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

187812157130 is a deficient number, since it is larger than the sum of its proper divisors (176254486174).

187812157130 is a wasteful number, since it uses less digits than its factorization.

187812157130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1444708921.

The product of its (nonzero) digits is 94080, while the sum is 44.

The spelling of 187812157130 in words is "one hundred eighty-seven billion, eight hundred twelve million, one hundred fifty-seven thousand, one hundred thirty".