1610401322909 has 2 divisors, whose sum is σ = 1610401322910. Its totient is φ = 1610401322908.

The previous prime is 1610401322899. The next prime is 1610401323017. The reversal of 1610401322909 is 9092231040161.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1324179532900 + 286221790009 = 1150730^2 + 534997^2 .

It is an emirp because it is prime and its reverse (9092231040161) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1610401322909 - 2²⁰ = 1610400274333 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1610401322209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 805200661454 + 805200661455.

It is an arithmetic number, because the mean of its divisors is an integer number (805200661455).

Almost surely, 2^{1610401322909} is an apocalyptic number.

It is an amenable number.

1610401322909 is a deficient number, since it is larger than the sum of its proper divisors (1).

1610401322909 is an equidigital number, since it uses as much as digits as its factorization.

1610401322909 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 23328, while the sum is 38.

The spelling of 1610401322909 in words is "one trillion, six hundred ten billion, four hundred one million, three hundred twenty-two thousand, nine hundred nine".