1799641 has 4 divisors (see below), whose sum is σ = 1818292. Its totient is φ = 1780992.

The previous prime is 1799639. The next prime is 1799701. The reversal of 1799641 is 1469971.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1469971 = 331 ⋅4441.

It can be written as a sum of positive squares in 2 ways, for example, as 409600 + 1390041 = 640^2 + 1179^2 .

It is a cyclic number.

It is not a de Polignac number, because 1799641 - 2¹ = 1799639 is a prime.

It is a super-3 number, since 3×1799641³ = 17485533647733395163, which contains 333 as substring.

It is a Duffinian number.

It is a plaindrome in base 14.

It is a self number, because there is not a number n which added to its sum of digits gives 1799641.

It is not an unprimeable number, because it can be changed into a prime (1799621) 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, 9180 + ... + 9373.

It is an arithmetic number, because the mean of its divisors is an integer number (454573).

2^1799641 is an apocalyptic number.

It is an amenable number.

1799641 is a deficient number, since it is larger than the sum of its proper divisors (18651).

1799641 is an equidigital number, since it uses as much as digits as its factorization.

1799641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18650.

The product of its digits is 13608, while the sum is 37.

The square root of 1799641 is about 1341.5069884276. The cubic root of 1799641 is about 121.6359522978.

The spelling of 1799641 in words is "one million, seven hundred ninety-nine thousand, six hundred forty-one".