1356169 has 2 divisors, whose sum is σ = 1356170. Its totient is φ = 1356168.

The previous prime is 1356167. The next prime is 1356181. The reversal of 1356169 is 9616531.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1352569 + 3600 = 1163^2 + 60^2 .

It is a cyclic number.

It is not a de Polignac number, because 1356169 - 2¹ = 1356167 is a prime.

It is a super-2 number, since 2×1356169² = 3678388713122, which contains 22 as substring.

Together with 1356167, it forms a pair of twin primes.

1356169 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 1356169.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1356167) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 678084 + 678085.

It is an arithmetic number, because the mean of its divisors is an integer number (678085).

2^1356169 is an apocalyptic number.

It is an amenable number.

1356169 is a deficient number, since it is larger than the sum of its proper divisors (1).

1356169 is an equidigital number, since it uses as much as digits as its factorization.

1356169 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4860, while the sum is 31.

The square root of 1356169 is about 1164.5466929239. The cubic root of 1356169 is about 110.6890357760.

The spelling of 1356169 in words is "one million, three hundred fifty-six thousand, one hundred sixty-nine".