1492181 has 2 divisors, whose sum is σ = 1492182. Its totient is φ = 1492180.

The previous prime is 1492177. The next prime is 1492187. The reversal of 1492181 is 1812941.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1380625 + 111556 = 1175^2 + 334^2 .

It is a cyclic number.

It is not a de Polignac number, because 1492181 - 2² = 1492177 is a prime.

It is a super-2 number, since 2×1492181² = 4453208273522, which contains 22 as substring.

It is a Sophie Germain prime.

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

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1492181.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1492187) 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 as a sum of consecutive naturals, namely, 746090 + 746091.

It is an arithmetic number, because the mean of its divisors is an integer number (746091).

2^1492181 is an apocalyptic number.

It is an amenable number.

1492181 is a deficient number, since it is larger than the sum of its proper divisors (1).

1492181 is an equidigital number, since it uses as much as digits as its factorization.

1492181 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 576, while the sum is 26.

The square root of 1492181 is about 1221.5486073014. The cubic root of 1492181 is about 114.2721771912.

The spelling of 1492181 in words is "one million, four hundred ninety-two thousand, one hundred eighty-one".