181039 has 2 divisors, whose sum is σ = 181040. Its totient is φ = 181038.

The previous prime is 181031. The next prime is 181061. The reversal of 181039 is 930181.

It is an a-pointer prime, because the next prime (181061) can be obtained adding 181039 to its sum of digits (22).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 181039 - 2³ = 181031 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (181031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 90519 + 90520.

It is an arithmetic number, because the mean of its divisors is an integer number (90520).

2¹⁸¹⁰³⁹ is an apocalyptic number.

181039 is a deficient number, since it is larger than the sum of its proper divisors (1).

181039 is an equidigital number, since it uses as much as digits as its factorization.

181039 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 216, while the sum is 22.

The square root of 181039 is about 425.4867800532. The cubic root of 181039 is about 56.5705907558.

It can be divided in two parts, 1810 and 39, that added together give a square (1849 = 43²).

The spelling of 181039 in words is "one hundred eighty-one thousand, thirty-nine".