187880141 has 4 divisors (see below), whose sum is σ = 198931932. Its totient is φ = 176828352.

The previous prime is 187880111. The next prime is 187880153. The reversal of 187880141 is 141088781.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 170198116 + 17682025 = 13046^2 + 4205^2 .

It is a cyclic number.

It is not a de Polignac number, because 187880141 - 2²² = 183685837 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 187880095 and 187880104.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (187880101) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5525870 + ... + 5525903.

It is an arithmetic number, because the mean of its divisors is an integer number (49732983).

Almost surely, 2^187880141 is an apocalyptic number.

It is an amenable number.

187880141 is a deficient number, since it is larger than the sum of its proper divisors (11051791).

187880141 is a wasteful number, since it uses less digits than its factorization.

187880141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11051790.

The product of its (nonzero) digits is 14336, while the sum is 38.

The square root of 187880141 is about 13706.9376959261. The cubic root of 187880141 is about 572.7436626711.

The spelling of 187880141 in words is "one hundred eighty-seven million, eight hundred eighty thousand, one hundred forty-one".