1156369 has 2 divisors, whose sum is σ = 1156370. Its totient is φ = 1156368.

The previous prime is 1156367. The next prime is 1156387. The reversal of 1156369 is 9636511.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 659344 + 497025 = 812^2 + 705^2 .

It is a cyclic number.

It is not a de Polignac number, because 1156369 - 2¹ = 1156367 is a prime.

It is a super-2 number, since 2×1156369² = 2674378528322, which contains 22 as substring.

Together with 1156367, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 1156369.

It is not a weakly prime, because it can be changed into another prime (1156367) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 578184 + 578185.

It is an arithmetic number, because the mean of its divisors is an integer number (578185).

2^1156369 is an apocalyptic number.

It is an amenable number.

1156369 is a deficient number, since it is larger than the sum of its proper divisors (1).

1156369 is an equidigital number, since it uses as much as digits as its factorization.

1156369 is an evil number, because the sum of its binary digits is even.

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

The square root of 1156369 is about 1075.3459908327. The cubic root of 1156369 is about 104.9620119571.

The spelling of 1156369 in words is "one million, one hundred fifty-six thousand, three hundred sixty-nine".