1834981 has 2 divisors, whose sum is σ = 1834982. Its totient is φ = 1834980.

The previous prime is 1834969. The next prime is 1834991. The reversal of 1834981 is 1894381.

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., 1464100 + 370881 = 1210^2 + 609^2 .

It is an emirp because it is prime and its reverse (1894381) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1834981 - 2¹¹ = 1832933 is a prime.

It is a super-2 number, since 2×1834981² = 6734310540722, which contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

1834981 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1834901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 917490 + 917491.

It is an arithmetic number, because the mean of its divisors is an integer number (917491).

2^1834981 is an apocalyptic number.

It is an amenable number.

1834981 is a deficient number, since it is larger than the sum of its proper divisors (1).

1834981 is an equidigital number, since it uses as much as digits as its factorization.

1834981 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6912, while the sum is 34.

The square root of 1834981 is about 1354.6147053683. The cubic root of 1834981 is about 122.4269952348.

The spelling of 1834981 in words is "one million, eight hundred thirty-four thousand, nine hundred eighty-one".