1849238139 has 32 divisors (see below), whose sum is σ = 2838330880. Its totient is φ = 1049075712.

The previous prime is 1849238113. The next prime is 1849238141. The reversal of 1849238139 is 9318329481.

It is not a de Polignac number, because 1849238139 - 2⁹ = 1849237627 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1849238179) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2404347 + ... + 2405115.

It is an arithmetic number, because the mean of its divisors is an integer number (88697840).

Almost surely, 2^1849238139 is an apocalyptic number.

1849238139 is a deficient number, since it is larger than the sum of its proper divisors (989092741).

1849238139 is a wasteful number, since it uses less digits than its factorization.

1849238139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1459.

The product of its digits is 373248, while the sum is 48.

The square root of 1849238139 is about 43002.7689689862. The cubic root of 1849238139 is about 1227.4324874966.

The spelling of 1849238139 in words is "one billion, eight hundred forty-nine million, two hundred thirty-eight thousand, one hundred thirty-nine".