1791115 has 4 divisors (see below), whose sum is σ = 2149344. Its totient is φ = 1432888.

The previous prime is 1791113. The next prime is 1791121. The reversal of 1791115 is 5111971.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1791115 - 2¹ = 1791113 is a prime.

It is a super-3 number, since 3×1791115³ = 17238190176013337625, which contains 333 as substring.

It is a Duffinian number.

1791115 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 1791115.

It is not an unprimeable number, because it can be changed into a prime (1791113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 179107 + ... + 179116.

It is an arithmetic number, because the mean of its divisors is an integer number (537336).

2^1791115 is an apocalyptic number.

1791115 is a deficient number, since it is larger than the sum of its proper divisors (358229).

1791115 is an equidigital number, since it uses as much as digits as its factorization.

1791115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 358228.

The product of its digits is 315, while the sum is 25.

The square root of 1791115 is about 1338.3254462200. The cubic root of 1791115 is about 121.4435601863.

The spelling of 1791115 in words is "one million, seven hundred ninety-one thousand, one hundred fifteen".