1365921329 has 2 divisors, whose sum is σ = 1365921330. Its totient is φ = 1365921328.

The previous prime is 1365921317. The next prime is 1365921383. The reversal of 1365921329 is 9231295631.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1127280625 + 238640704 = 33575^2 + 15448^2 .

It is a cyclic number.

It is not a de Polignac number, because 1365921329 - 2⁴ = 1365921313 is a prime.

It is not a weakly prime, because it can be changed into another prime (1365921629) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 682960664 + 682960665.

It is an arithmetic number, because the mean of its divisors is an integer number (682960665).

Almost surely, 2^1365921329 is an apocalyptic number.

It is an amenable number.

1365921329 is a deficient number, since it is larger than the sum of its proper divisors (1).

1365921329 is an equidigital number, since it uses as much as digits as its factorization.

1365921329 is an evil number, because the sum of its binary digits is even.

The product of its digits is 87480, while the sum is 41.

The square root of 1365921329 is about 36958.3729214369. The cubic root of 1365921329 is about 1109.5372713489.

The spelling of 1365921329 in words is "one billion, three hundred sixty-five million, nine hundred twenty-one thousand, three hundred twenty-nine".