1849138444 has 12 divisors (see below), whose sum is σ = 3406307800. Its totient is φ = 875907648.

The previous prime is 1849138409. The next prime is 1849138471. The reversal of 1849138444 is 4448319481.

It is a super-2 number, since 2×1849138444² = 6838625970157482272, which contains 22 as substring.

It is a hoax number, since the sum of its digits (46) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 1849138394 and 1849138403.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 12165309 + ... + 12165460.

Almost surely, 2^1849138444 is an apocalyptic number.

It is an amenable number.

1849138444 is a deficient number, since it is larger than the sum of its proper divisors (1557169356).

1849138444 is a wasteful number, since it uses less digits than its factorization.

1849138444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24330792 (or 24330790 counting only the distinct ones).

The product of its digits is 442368, while the sum is 46.

The square root of 1849138444 is about 43001.6097838209. The cubic root of 1849138444 is about 1227.4104295694.

The spelling of 1849138444 in words is "one billion, eight hundred forty-nine million, one hundred thirty-eight thousand, four hundred forty-four".