802146109 has 2 divisors, whose sum is σ = 802146110. Its totient is φ = 802146108.

The previous prime is 802146019. The next prime is 802146187. The reversal of 802146109 is 901641208.

It is a happy number.

Together with previous prime (802146019) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 724794084 + 77352025 = 26922^2 + 8795^2 .

It is a cyclic number.

It is not a de Polignac number, because 802146109 - 2²⁷ = 667928381 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (808146109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 401073054 + 401073055.

It is an arithmetic number, because the mean of its divisors is an integer number (401073055).

Almost surely, 2^802146109 is an apocalyptic number.

It is an amenable number.

802146109 is a deficient number, since it is larger than the sum of its proper divisors (1).

802146109 is an equidigital number, since it uses as much as digits as its factorization.

802146109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3456, while the sum is 31.

The square root of 802146109 is about 28322.1840436079. The cubic root of 802146109 is about 929.1471384940.

The spelling of 802146109 in words is "eight hundred two million, one hundred forty-six thousand, one hundred nine".