1849099221 has 48 divisors (see below), whose sum is σ = 2798070912. Its totient is φ = 1175731200.

The previous prime is 1849099211. The next prime is 1849099243. The reversal of 1849099221 is 1229909481.

It is not a de Polignac number, because 1849099221 - 2⁷ = 1849099093 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1849099211) 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 47 ways as a sum of consecutive naturals, for example, 4270221 + ... + 4270653.

It is an arithmetic number, because the mean of its divisors is an integer number (58293144).

Almost surely, 2^1849099221 is an apocalyptic number.

It is an amenable number.

1849099221 is a deficient number, since it is larger than the sum of its proper divisors (948971691).

1849099221 is a wasteful number, since it uses less digits than its factorization.

1849099221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 714 (or 711 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 45.

The square root of 1849099221 is about 43001.1537170807. The cubic root of 1849099221 is about 1227.4017511026.

It can be divided in two parts, 18490 and 99221, that added together give a palindrome (117711).

The spelling of 1849099221 in words is "one billion, eight hundred forty-nine million, ninety-nine thousand, two hundred twenty-one".