1645011299 has 2 divisors, whose sum is σ = 1645011300. Its totient is φ = 1645011298.

The previous prime is 1645011287. The next prime is 1645011331. The reversal of 1645011299 is 9921105461.

It is a weak prime.

It is an emirp because it is prime and its reverse (9921105461) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1645011299 is a prime.

It is not a weakly prime, because it can be changed into another prime (1645011209) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 822505649 + 822505650.

It is an arithmetic number, because the mean of its divisors is an integer number (822505650).

Almost surely, 2^1645011299 is an apocalyptic number.

1645011299 is a deficient number, since it is larger than the sum of its proper divisors (1).

1645011299 is an equidigital number, since it uses as much as digits as its factorization.

1645011299 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 19440, while the sum is 38.

The square root of 1645011299 is about 40558.7388733920. The cubic root of 1645011299 is about 1180.4736437651.

The spelling of 1645011299 in words is "one billion, six hundred forty-five million, eleven thousand, two hundred ninety-nine".