1859112049 has 4 divisors (see below), whose sum is σ = 1868549364. Its totient is φ = 1849674736.

The previous prime is 1859112037. The next prime is 1859112083. The reversal of 1859112049 is 9402119581.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1188043024 + 671069025 = 34468^2 + 25905^2 .

It is a cyclic number.

It is not a de Polignac number, because 1859112049 - 2⁷ = 1859111921 is a prime.

It is a super-2 number, since 2×1859112049² = 6912595221473956802, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1859112949) 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 3 ways as a sum of consecutive naturals, for example, 4718362 + ... + 4718755.

It is an arithmetic number, because the mean of its divisors is an integer number (467137341).

Almost surely, 2^1859112049 is an apocalyptic number.

It is an amenable number.

1859112049 is a deficient number, since it is larger than the sum of its proper divisors (9437315).

1859112049 is an equidigital number, since it uses as much as digits as its factorization.

1859112049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9437314.

The product of its (nonzero) digits is 25920, while the sum is 40.

The square root of 1859112049 is about 43117.4216413737. The cubic root of 1859112049 is about 1229.6132145819.

The spelling of 1859112049 in words is "one billion, eight hundred fifty-nine million, one hundred twelve thousand, forty-nine".