1369813 has 2 divisors, whose sum is σ = 1369814. Its totient is φ = 1369812.

The previous prime is 1369801. The next prime is 1369831. The reversal of 1369813 is 3189631.

1369813 is nontrivially palindromic in base 5.

Together with next prime (1369831) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1238769 + 131044 = 1113^2 + 362^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1369813 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1369853) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 684906 + 684907.

It is an arithmetic number, because the mean of its divisors is an integer number (684907).

2^1369813 is an apocalyptic number.

It is an amenable number.

1369813 is a deficient number, since it is larger than the sum of its proper divisors (1).

1369813 is an equidigital number, since it uses as much as digits as its factorization.

1369813 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3888, while the sum is 31.

The square root of 1369813 is about 1170.3901059049. The cubic root of 1369813 is about 111.0590006384.

The spelling of 1369813 in words is "one million, three hundred sixty-nine thousand, eight hundred thirteen".