1353905261 has 2 divisors, whose sum is σ = 1353905262. Its totient is φ = 1353905260.

The previous prime is 1353905243. The next prime is 1353905317. The reversal of 1353905261 is 1625093531.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 906371236 + 447534025 = 30106^2 + 21155^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1353905261 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1353605261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 676952630 + 676952631.

It is an arithmetic number, because the mean of its divisors is an integer number (676952631).

Almost surely, 2^1353905261 is an apocalyptic number.

It is an amenable number.

1353905261 is a deficient number, since it is larger than the sum of its proper divisors (1).

1353905261 is an equidigital number, since it uses as much as digits as its factorization.

1353905261 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24300, while the sum is 35.

The square root of 1353905261 is about 36795.4516346790. The cubic root of 1353905261 is about 1106.2741350624.

Adding to 1353905261 its reverse (1625093531), we get a palindrome (2978998792).

The spelling of 1353905261 in words is "one billion, three hundred fifty-three million, nine hundred five thousand, two hundred sixty-one".