1829797 has 2 divisors, whose sum is σ = 1829798. Its totient is φ = 1829796.

The previous prime is 1829777. The next prime is 1829801. The reversal of 1829797 is 7979281.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 919681 + 910116 = 959^2 + 954^2 .

It is an emirp because it is prime and its reverse (7979281) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1829797 is a prime.

It is a super-2 number, since 2×1829797² = 6696314122418, which contains 22 as substring.

1829797 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1829717) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 914898 + 914899.

It is an arithmetic number, because the mean of its divisors is an integer number (914899).

2^1829797 is an apocalyptic number.

It is an amenable number.

1829797 is a deficient number, since it is larger than the sum of its proper divisors (1).

1829797 is an equidigital number, since it uses as much as digits as its factorization.

1829797 is an evil number, because the sum of its binary digits is even.

The product of its digits is 63504, while the sum is 43.

The square root of 1829797 is about 1352.6998928070. The cubic root of 1829797 is about 122.3115971020.

The spelling of 1829797 in words is "one million, eight hundred twenty-nine thousand, seven hundred ninety-seven".