1849669641 has 8 divisors (see below), whose sum is σ = 2740251360. Its totient is φ = 1233113076.

The previous prime is 1849669609. The next prime is 1849669643. The reversal of 1849669641 is 1469669481.

It is a happy number.

It is not a de Polignac number, because 1849669641 - 2⁵ = 1849669609 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1849669643) 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 7 ways as a sum of consecutive naturals, for example, 34253115 + ... + 34253168.

It is an arithmetic number, because the mean of its divisors is an integer number (342531420).

Almost surely, 2^1849669641 is an apocalyptic number.

It is an amenable number.

1849669641 is a deficient number, since it is larger than the sum of its proper divisors (890581719).

1849669641 is an equidigital number, since it uses as much as digits as its factorization.

1849669641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68506292 (or 68506286 counting only the distinct ones).

The product of its digits is 2239488, while the sum is 54.

The square root of 1849669641 is about 43007.7858183841. The cubic root of 1849669641 is about 1227.5279499417.

The spelling of 1849669641 in words is "one billion, eight hundred forty-nine million, six hundred sixty-nine thousand, six hundred forty-one".