1335761261 has 2 divisors, whose sum is σ = 1335761262. Its totient is φ = 1335761260.

The previous prime is 1335761249. The next prime is 1335761327. The reversal of 1335761261 is 1621675331.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1310005636 + 25755625 = 36194^2 + 5075^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1335761261 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1335761221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 667880630 + 667880631.

It is an arithmetic number, because the mean of its divisors is an integer number (667880631).

Almost surely, 2^1335761261 is an apocalyptic number.

It is an amenable number.

1335761261 is a deficient number, since it is larger than the sum of its proper divisors (1).

1335761261 is an equidigital number, since it uses as much as digits as its factorization.

1335761261 is an evil number, because the sum of its binary digits is even.

The product of its digits is 22680, while the sum is 35.

The square root of 1335761261 is about 36548.0678148654. The cubic root of 1335761261 is about 1101.3100812449.

The spelling of 1335761261 in words is "one billion, three hundred thirty-five million, seven hundred sixty-one thousand, two hundred sixty-one".