186750049 has 4 divisors (see below), whose sum is σ = 197735364. Its totient is φ = 175764736.

The previous prime is 186750023. The next prime is 186750073. The reversal of 186750049 is 940057681.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 940057681 = 281 ⋅3345401.

It can be written as a sum of positive squares in 2 ways, for example, as 140849424 + 45900625 = 11868^2 + 6775^2 .

It is a cyclic number.

It is not a de Polignac number, because 186750049 - 2²³ = 178361441 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 186749993 and 186750020.

It is not an unprimeable number, because it can be changed into a prime (186750019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5492632 + ... + 5492665.

It is an arithmetic number, because the mean of its divisors is an integer number (49433841).

Almost surely, 2^186750049 is an apocalyptic number.

It is an amenable number.

186750049 is a deficient number, since it is larger than the sum of its proper divisors (10985315).

186750049 is a wasteful number, since it uses less digits than its factorization.

186750049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10985314.

The product of its (nonzero) digits is 60480, while the sum is 40.

The square root of 186750049 is about 13665.6521615326. The cubic root of 186750049 is about 571.5930086494.

The spelling of 186750049 in words is "one hundred eighty-six million, seven hundred fifty thousand, forty-nine".