1600768121 has 2 divisors, whose sum is σ = 1600768122. Its totient is φ = 1600768120.

The previous prime is 1600768109. The next prime is 1600768153. The reversal of 1600768121 is 1218670061.

It is a happy number.

It is an a-pointer prime, because the next prime (1600768153) can be obtained adding 1600768121 to its sum of digits (32).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 909866896 + 690901225 = 30164^2 + 26285^2 .

It is a cyclic number.

It is not a de Polignac number, because 1600768121 - 2²² = 1596573817 is a prime.

It is not a weakly prime, because it can be changed into another prime (1600768321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 800384060 + 800384061.

It is an arithmetic number, because the mean of its divisors is an integer number (800384061).

Almost surely, 2^1600768121 is an apocalyptic number.

It is an amenable number.

1600768121 is a deficient number, since it is larger than the sum of its proper divisors (1).

1600768121 is an equidigital number, since it uses as much as digits as its factorization.

1600768121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4032, while the sum is 32.

The square root of 1600768121 is about 40009.6003604135. The cubic root of 1600768121 is about 1169.7942319608.

The spelling of 1600768121 in words is "one billion, six hundred million, seven hundred sixty-eight thousand, one hundred twenty-one".