1650097121 has 2 divisors, whose sum is σ = 1650097122. Its totient is φ = 1650097120.

The previous prime is 1650097117. The next prime is 1650097139. The reversal of 1650097121 is 1217900561.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1190595025 + 459502096 = 34505^2 + 21436^2 .

It is an emirp because it is prime and its reverse (1217900561) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1650097121 - 2² = 1650097117 is a prime.

It is not a weakly prime, because it can be changed into another prime (1650097321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 825048560 + 825048561.

It is an arithmetic number, because the mean of its divisors is an integer number (825048561).

Almost surely, 2^1650097121 is an apocalyptic number.

It is an amenable number.

1650097121 is a deficient number, since it is larger than the sum of its proper divisors (1).

1650097121 is an equidigital number, since it uses as much as digits as its factorization.

1650097121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3780, while the sum is 32.

The square root of 1650097121 is about 40621.3874824581. The cubic root of 1650097121 is about 1181.6889347721.

Adding to 1650097121 its reverse (1217900561), we get a palindrome (2867997682).

The spelling of 1650097121 in words is "one billion, six hundred fifty million, ninety-seven thousand, one hundred twenty-one".