1016181 has 6 divisors (see below), whose sum is σ = 1467830. Its totient is φ = 677448.

The previous prime is 1016173. The next prime is 1016201. The reversal of 1016181 is 1816101.

It can be written as a sum of positive squares in only one way, i.e., 731025 + 285156 = 855^2 + 534^2 .

It is not a de Polignac number, because 1016181 - 2³ = 1016173 is a prime.

It is a super-2 number, since 2×1016181² = 2065247649522, which contains 22 as substring.

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

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1016111) 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 5 ways as a sum of consecutive naturals, for example, 56446 + ... + 56463.

2^1016181 is an apocalyptic number.

It is an amenable number.

1016181 is a deficient number, since it is larger than the sum of its proper divisors (451649).

1016181 is a wasteful number, since it uses less digits than its factorization.

1016181 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112915 (or 112912 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 18.

The square root of 1016181 is about 1008.0580340437. The cubic root of 1016181 is about 100.5364833756.

The spelling of 1016181 in words is "one million, sixteen thousand, one hundred eighty-one".