1791213 has 8 divisors (see below), whose sum is σ = 2404128. Its totient is φ = 1186224.

The previous prime is 1791203. The next prime is 1791221. The reversal of 1791213 is 3121971.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1791213 - 2¹⁸ = 1529069 is a prime.

It is a super-2 number, since 2×1791213² = 6416888022738, which contains 22 as substring.

It is a plaindrome in base 14.

It is a zygodrome in base 9.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1791203) 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 in 7 ways as a sum of consecutive naturals, for example, 1431 + ... + 2372.

It is an arithmetic number, because the mean of its divisors is an integer number (300516).

2^1791213 is an apocalyptic number.

It is an amenable number.

1791213 is a deficient number, since it is larger than the sum of its proper divisors (612915).

1791213 is a wasteful number, since it uses less digits than its factorization.

1791213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3963.

The product of its digits is 378, while the sum is 24.

The square root of 1791213 is about 1338.3620586373. The cubic root of 1791213 is about 121.4457750547.

The spelling of 1791213 in words is "one million, seven hundred ninety-one thousand, two hundred thirteen".