1799381 has 2 divisors, whose sum is σ = 1799382. Its totient is φ = 1799380.

The previous prime is 1799311. The next prime is 1799393. The reversal of 1799381 is 1839971.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1144900 + 654481 = 1070^2 + 809^2 .

It is a cyclic number.

It is not a de Polignac number, because 1799381 - 2¹⁴ = 1782997 is a prime.

It is a super-2 number, since 2×1799381² = 6475543966322, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1799311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 899690 + 899691.

It is an arithmetic number, because the mean of its divisors is an integer number (899691).

2^1799381 is an apocalyptic number.

It is an amenable number.

1799381 is a deficient number, since it is larger than the sum of its proper divisors (1).

1799381 is an equidigital number, since it uses as much as digits as its factorization.

1799381 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 13608, while the sum is 38.

The square root of 1799381 is about 1341.4100789841. The cubic root of 1799381 is about 121.6300943015.

The spelling of 1799381 in words is "one million, seven hundred ninety-nine thousand, three hundred eighty-one".