1369822261 has 8 divisors (see below), whose sum is σ = 1374145560. Its totient is φ = 1365507072.

The previous prime is 1369822217. The next prime is 1369822367. The reversal of 1369822261 is 1622289631.

It can be written as a sum of positive squares in 4 ways, for example, as 338192100 + 1031630161 = 18390^2 + 32119^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1369822261 - 2¹⁹ = 1369297973 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1369822561) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 526981 + ... + 529573.

It is an arithmetic number, because the mean of its divisors is an integer number (171768195).

Almost surely, 2^1369822261 is an apocalyptic number.

It is an amenable number.

1369822261 is a deficient number, since it is larger than the sum of its proper divisors (4323299).

1369822261 is an equidigital number, since it uses as much as digits as its factorization.

1369822261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4055.

The product of its digits is 62208, while the sum is 40.

The square root of 1369822261 is about 37011.1099671436. The cubic root of 1369822261 is about 1110.5925091952.

The spelling of 1369822261 in words is "one billion, three hundred sixty-nine million, eight hundred twenty-two thousand, two hundred sixty-one".