1799539249 has 4 divisors (see below), whose sum is σ = 1808674164. Its totient is φ = 1790404336.

The previous prime is 1799539219. The next prime is 1799539307. The reversal of 1799539249 is 9429359971.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9429359971 = 239 ⋅39453389.

It can be written as a sum of positive squares in 2 ways, for example, as 1676329249 + 123210000 = 40943^2 + 11100^2 .

It is a cyclic number.

It is not a de Polignac number, because 1799539249 - 2⁹ = 1799538737 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1799539193 and 1799539202.

It is not an unprimeable number, because it can be changed into a prime (1799539219) 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, 4567162 + ... + 4567555.

It is an arithmetic number, because the mean of its divisors is an integer number (452168541).

Almost surely, 2^1799539249 is an apocalyptic number.

It is an amenable number.

1799539249 is a deficient number, since it is larger than the sum of its proper divisors (9134915).

1799539249 is an equidigital number, since it uses as much as digits as its factorization.

1799539249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9134914.

The product of its digits is 5511240, while the sum is 58.

The square root of 1799539249 is about 42420.9765210562. The cubic root of 1799539249 is about 1216.3365983815.

The spelling of 1799539249 in words is "one billion, seven hundred ninety-nine million, five hundred thirty-nine thousand, two hundred forty-nine".