1799590489 has 6 divisors (see below), whose sum is σ = 1812840974. Its totient is φ = 1786436160.

The previous prime is 1799590477. The next prime is 1799590493. The reversal of 1799590489 is 9840959971.

It can be written as a sum of positive squares in 3 ways, for example, as 941569225 + 858021264 = 30685^2 + 29292^2 .

It is not a de Polignac number, because 1799590489 - 2¹³ = 1799582297 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1799590439) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 29172 + ... + 66709.

Almost surely, 2^1799590489 is an apocalyptic number.

It is an amenable number.

1799590489 is a deficient number, since it is larger than the sum of its proper divisors (13250485).

1799590489 is an frugal number, since it uses more digits than its factorization.

1799590489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96155 (or 96018 counting only the distinct ones).

The product of its (nonzero) digits is 7348320, while the sum is 61.

The square root of 1799590489 is about 42421.5804632501. The cubic root of 1799590489 is about 1216.3481429098.

The spelling of 1799590489 in words is "one billion, seven hundred ninety-nine million, five hundred ninety thousand, four hundred eighty-nine".