1359181 has 2 divisors, whose sum is σ = 1359182. Its totient is φ = 1359180.

The previous prime is 1359179. The next prime is 1359209. The reversal of 1359181 is 1819531.

It is an a-pointer prime, because the next prime (1359209) can be obtained adding 1359181 to its sum of digits (28).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 826281 + 532900 = 909^2 + 730^2 .

It is a cyclic number.

It is not a de Polignac number, because 1359181 - 2¹ = 1359179 is a prime.

It is a super-2 number, since 2×1359181² = 3694745981522, which contains 22 as substring.

Together with 1359179, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1359161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 679590 + 679591.

It is an arithmetic number, because the mean of its divisors is an integer number (679591).

2^1359181 is an apocalyptic number.

It is an amenable number.

1359181 is a deficient number, since it is larger than the sum of its proper divisors (1).

1359181 is an equidigital number, since it uses as much as digits as its factorization.

1359181 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1080, while the sum is 28.

The square root of 1359181 is about 1165.8391827349. The cubic root of 1359181 is about 110.7709205706.

It can be divided in two parts, 1359 and 181, that added together give a triangular number (1540 = T₅₅).

The spelling of 1359181 in words is "one million, three hundred fifty-nine thousand, one hundred eighty-one".