1369822561 has 2 divisors, whose sum is σ = 1369822562. Its totient is φ = 1369822560.

The previous prime is 1369822543. The next prime is 1369822607. The reversal of 1369822561 is 1652289631.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1319142400 + 50680161 = 36320^2 + 7119^2 .

It is a cyclic number.

It is not a de Polignac number, because 1369822561 - 2¹⁵ = 1369789793 is a prime.

It is not a weakly prime, because it can be changed into another prime (1369822541) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 684911280 + 684911281.

It is an arithmetic number, because the mean of its divisors is an integer number (684911281).

Almost surely, 2^1369822561 is an apocalyptic number.

It is an amenable number.

1369822561 is a deficient number, since it is larger than the sum of its proper divisors (1).

1369822561 is an equidigital number, since it uses as much as digits as its factorization.

1369822561 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 155520, while the sum is 43.

The square root of 1369822561 is about 37011.1140199805. The cubic root of 1369822561 is about 1110.5925902709.

The spelling of 1369822561 in words is "one billion, three hundred sixty-nine million, eight hundred twenty-two thousand, five hundred sixty-one".