165842797 has 2 divisors, whose sum is σ = 165842798. Its totient is φ = 165842796.

The previous prime is 165842791. The next prime is 165842861. The reversal of 165842797 is 797248561.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 120428676 + 45414121 = 10974^2 + 6739^2 .

It is a cyclic number.

It is not a de Polignac number, because 165842797 - 2¹¹ = 165840749 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 165842797.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (165842791) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82921398 + 82921399.

It is an arithmetic number, because the mean of its divisors is an integer number (82921399).

Almost surely, 2^165842797 is an apocalyptic number.

It is an amenable number.

165842797 is a deficient number, since it is larger than the sum of its proper divisors (1).

165842797 is an equidigital number, since it uses as much as digits as its factorization.

165842797 is an evil number, because the sum of its binary digits is even.

The product of its digits is 846720, while the sum is 49.

The square root of 165842797 is about 12877.9966221459. The cubic root of 165842797 is about 549.4129239848.

The spelling of 165842797 in words is "one hundred sixty-five million, eight hundred forty-two thousand, seven hundred ninety-seven".