1818799 has 2 divisors, whose sum is σ = 1818800. Its totient is φ = 1818798.

The previous prime is 1818787. The next prime is 1818833. The reversal of 1818799 is 9978181.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1818799 - 2¹³ = 1810607 is a prime.

1818799 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1818769) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 909399 + 909400.

It is an arithmetic number, because the mean of its divisors is an integer number (909400).

2^1818799 is an apocalyptic number.

1818799 is a deficient number, since it is larger than the sum of its proper divisors (1).

1818799 is an equidigital number, since it uses as much as digits as its factorization.

1818799 is an evil number, because the sum of its binary digits is even.

The product of its digits is 36288, while the sum is 43.

The square root of 1818799 is about 1348.6285626517. The cubic root of 1818799 is about 122.0660530962.

The spelling of 1818799 in words is "one million, eight hundred eighteen thousand, seven hundred ninety-nine".