1849155549 has 32 divisors (see below), whose sum is σ = 2629186560. Its totient is φ = 1153958400.

The previous prime is 1849155533. The next prime is 1849155551. The reversal of 1849155549 is 9455519481.

It is not a de Polignac number, because 1849155549 - 2⁴ = 1849155533 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1849155559) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 621337 + ... + 624305.

It is an arithmetic number, because the mean of its divisors is an integer number (82162080).

Almost surely, 2^1849155549 is an apocalyptic number.

It is an amenable number.

1849155549 is a deficient number, since it is larger than the sum of its proper divisors (780031011).

1849155549 is a wasteful number, since it uses less digits than its factorization.

1849155549 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3221.

The product of its digits is 1296000, while the sum is 51.

The square root of 1849155549 is about 43001.8086712640. The cubic root of 1849155549 is about 1227.4142141771.

The spelling of 1849155549 in words is "one billion, eight hundred forty-nine million, one hundred fifty-five thousand, five hundred forty-nine".