1645365011 has 2 divisors, whose sum is σ = 1645365012. Its totient is φ = 1645365010.

The previous prime is 1645364999. The next prime is 1645365013. The reversal of 1645365011 is 1105635461.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1645365011 - 2¹⁰ = 1645363987 is a prime.

Together with 1645365013, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1645365013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 822682505 + 822682506.

It is an arithmetic number, because the mean of its divisors is an integer number (822682506).

Almost surely, 2^1645365011 is an apocalyptic number.

1645365011 is a deficient number, since it is larger than the sum of its proper divisors (1).

1645365011 is an equidigital number, since it uses as much as digits as its factorization.

1645365011 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10800, while the sum is 32.

The square root of 1645365011 is about 40563.0991296277. The cubic root of 1645365011 is about 1180.5582465822.

The spelling of 1645365011 in words is "one billion, six hundred forty-five million, three hundred sixty-five thousand, eleven".