1849494143 has 16 divisors (see below), whose sum is σ = 2228497920. Its totient is φ = 1499453856.

The previous prime is 1849494121. The next prime is 1849494149. The reversal of 1849494143 is 3414949481.

It is a happy number.

It is not a de Polignac number, because 1849494143 - 2⁶ = 1849494079 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1849494149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 75305 + ... + 96797.

It is an arithmetic number, because the mean of its divisors is an integer number (139281120).

Almost surely, 2^1849494143 is an apocalyptic number.

1849494143 is a deficient number, since it is larger than the sum of its proper divisors (379003777).

1849494143 is a wasteful number, since it uses less digits than its factorization.

1849494143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22166.

The product of its digits is 497664, while the sum is 47.

The square root of 1849494143 is about 43005.7454649957. The cubic root of 1849494143 is about 1227.4891257991.

The spelling of 1849494143 in words is "one billion, eight hundred forty-nine million, four hundred ninety-four thousand, one hundred forty-three".