1078181 has 8 divisors (see below), whose sum is σ = 1169784. Its totient is φ = 987840.

The previous prime is 1078169. The next prime is 1078183. The reversal of 1078181 is 1818701.

1078181 = 191² + 192² + ... + 216².

It can be written as a sum of positive squares in 4 ways, for example, as 27556 + 1050625 = 166^2 + 1025^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 1078181 - 2¹⁸ = 816037 is a prime.

It is a super-2 number, since 2×1078181² = 2324948537522, 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 self number, because there is not a number n which added to its sum of digits gives 1078181.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1078183) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2351 + ... + 2771.

It is an arithmetic number, because the mean of its divisors is an integer number (146223).

2^1078181 is an apocalyptic number.

It is an amenable number.

1078181 is a deficient number, since it is larger than the sum of its proper divisors (91603).

1078181 is a wasteful number, since it uses less digits than its factorization.

1078181 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 631.

The product of its (nonzero) digits is 448, while the sum is 26.

The square root of 1078181 is about 1038.3549489457. The cubic root of 1078181 is about 102.5409235756.

The spelling of 1078181 in words is "one million, seventy-eight thousand, one hundred eighty-one".