1849793249 has 4 divisors (see below), whose sum is σ = 1849900080. Its totient is φ = 1849686420.

The previous prime is 1849793237. The next prime is 1849793303. The reversal of 1849793249 is 9423979481.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 1849793249 - 2⁴ = 1849793233 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1849793194 and 1849793203.

It is not an unprimeable number, because it can be changed into a prime (1849795249) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20807 + ... + 64284.

It is an arithmetic number, because the mean of its divisors is an integer number (462475020).

Almost surely, 2^1849793249 is an apocalyptic number.

It is an amenable number.

1849793249 is a deficient number, since it is larger than the sum of its proper divisors (106831).

1849793249 is an equidigital number, since it uses as much as digits as its factorization.

1849793249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106830.

The product of its digits is 3919104, while the sum is 56.

The square root of 1849793249 is about 43009.2228365033. Note that the first 3 decimals coincide. The cubic root of 1849793249 is about 1227.5552933642. Note that the first 3 decimals are identical.

The spelling of 1849793249 in words is "one billion, eight hundred forty-nine million, seven hundred ninety-three thousand, two hundred forty-nine".