187795121 has 4 divisors (see below), whose sum is σ = 188458992. Its totient is φ = 187131252.

The previous prime is 187795109. The next prime is 187795123. The reversal of 187795121 is 121597781.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 187795121 - 2¹⁰ = 187794097 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (187795123) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 331511 + ... + 332076.

It is an arithmetic number, because the mean of its divisors is an integer number (47114748).

Almost surely, 2^187795121 is an apocalyptic number.

It is an amenable number.

187795121 is a deficient number, since it is larger than the sum of its proper divisors (663871).

187795121 is an equidigital number, since it uses as much as digits as its factorization.

187795121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 663870.

The product of its digits is 35280, while the sum is 41.

The square root of 187795121 is about 13703.8359958079. The cubic root of 187795121 is about 572.6572564958.

The spelling of 187795121 in words is "one hundred eighty-seven million, seven hundred ninety-five thousand, one hundred twenty-one".