187834849 has 4 divisors (see below), whose sum is σ = 188160964. Its totient is φ = 187508736.

The previous prime is 187834807. The next prime is 187834861. The reversal of 187834849 is 948438781.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 948438781 = 2053 ⋅461977.

It can be written as a sum of positive squares in 2 ways, for example, as 178489600 + 9345249 = 13360^2 + 3057^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-187834849 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 187834796 and 187834805.

It is not an unprimeable number, because it can be changed into a prime (187834949) 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, 162192 + ... + 163345.

It is an arithmetic number, because the mean of its divisors is an integer number (47040241).

Almost surely, 2^187834849 is an apocalyptic number.

It is an amenable number.

187834849 is a deficient number, since it is larger than the sum of its proper divisors (326115).

187834849 is an equidigital number, since it uses as much as digits as its factorization.

187834849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 326114.

The product of its digits is 1548288, while the sum is 52.

The square root of 187834849 is about 13705.2854402964. The cubic root of 187834849 is about 572.6976354706.

It can be divided in two parts, 18783 and 4849, that added together give a palindrome (23632).

The spelling of 187834849 in words is "one hundred eighty-seven million, eight hundred thirty-four thousand, eight hundred forty-nine".