902161289 has 2 divisors, whose sum is σ = 902161290. Its totient is φ = 902161288.

The previous prime is 902161217. The next prime is 902161297. The reversal of 902161289 is 982161209.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 893113225 + 9048064 = 29885^2 + 3008^2 .

It is a cyclic number.

It is not a de Polignac number, because 902161289 - 2⁸ = 902161033 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (902161489) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 451080644 + 451080645.

It is an arithmetic number, because the mean of its divisors is an integer number (451080645).

Almost surely, 2^902161289 is an apocalyptic number.

It is an amenable number.

902161289 is a deficient number, since it is larger than the sum of its proper divisors (1).

902161289 is an equidigital number, since it uses as much as digits as its factorization.

902161289 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15552, while the sum is 38.

The square root of 902161289 is about 30035.9998834732. Note that the first 3 decimals coincide. The cubic root of 902161289 is about 966.2616192182.

The spelling of 902161289 in words is "nine hundred two million, one hundred sixty-one thousand, two hundred eighty-nine".