1386328829 has 2 divisors, whose sum is σ = 1386328830. Its totient is φ = 1386328828.

The previous prime is 1386328819. The next prime is 1386328919. The reversal of 1386328829 is 9288236831.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1169503204 + 216825625 = 34198^2 + 14725^2 .

It is a cyclic number.

It is not a de Polignac number, because 1386328829 - 2¹² = 1386324733 is a prime.

It is a super-2 number, since 2×1386328829² = 3843815244233022482, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1386328819) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 693164414 + 693164415.

It is an arithmetic number, because the mean of its divisors is an integer number (693164415).

Almost surely, 2^1386328829 is an apocalyptic number.

It is an amenable number.

1386328829 is a deficient number, since it is larger than the sum of its proper divisors (1).

1386328829 is an equidigital number, since it uses as much as digits as its factorization.

1386328829 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 995328, while the sum is 50.

The square root of 1386328829 is about 37233.4369753854. The cubic root of 1386328829 is about 1115.0356464704.

The spelling of 1386328829 in words is "one billion, three hundred eighty-six million, three hundred twenty-eight thousand, eight hundred twenty-nine".