1118081 has 2 divisors, whose sum is σ = 1118082. Its totient is φ = 1118080.

The previous prime is 1118063. The next prime is 1118101. The reversal of 1118081 is 1808111.

It is an a-pointer prime, because the next prime (1118101) can be obtained adding 1118081 to its sum of digits (20).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1081600 + 36481 = 1040^2 + 191^2 .

It is a cyclic number.

It is not a de Polignac number, because 1118081 - 2¹⁰ = 1117057 is a prime.

It is a super-2 number, since 2×1118081² = 2500210245122, which contains 22 as substring.

It is a Chen prime.

It is a plaindrome in base 7.

It is not a weakly prime, because it can be changed into another prime (1118011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 559040 + 559041.

It is an arithmetic number, because the mean of its divisors is an integer number (559041).

2^1118081 is an apocalyptic number.

It is an amenable number.

1118081 is a deficient number, since it is larger than the sum of its proper divisors (1).

1118081 is an equidigital number, since it uses as much as digits as its factorization.

1118081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 64, while the sum is 20.

The square root of 1118081 is about 1057.3934934545. The cubic root of 1118081 is about 103.7905362479.

It can be divided in two parts, 111 and 8081, that added together give a 13-th power (8192 = 2¹³).

The spelling of 1118081 in words is "one million, one hundred eighteen thousand, eighty-one".