1360869821 has 2 divisors, whose sum is σ = 1360869822. Its totient is φ = 1360869820.

The previous prime is 1360869803. The next prime is 1360869847. The reversal of 1360869821 is 1289680631.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1084977721 + 275892100 = 32939^2 + 16610^2 .

It is a cyclic number.

It is not a de Polignac number, because 1360869821 - 2¹⁴ = 1360853437 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1360869421) 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, 680434910 + 680434911.

It is an arithmetic number, because the mean of its divisors is an integer number (680434911).

Almost surely, 2^1360869821 is an apocalyptic number.

It is an amenable number.

1360869821 is a deficient number, since it is larger than the sum of its proper divisors (1).

1360869821 is an equidigital number, since it uses as much as digits as its factorization.

1360869821 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 124416, while the sum is 44.

The square root of 1360869821 is about 36889.9691108572. The cubic root of 1360869821 is about 1108.1678025364.

The spelling of 1360869821 in words is "one billion, three hundred sixty million, eight hundred sixty-nine thousand, eight hundred twenty-one".