165670469 has 2 divisors, whose sum is σ = 165670470. Its totient is φ = 165670468.

The previous prime is 165670409. The next prime is 165670487. The reversal of 165670469 is 964076561.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 152201569 + 13468900 = 12337^2 + 3670^2 .

It is a cyclic number.

It is not a de Polignac number, because 165670469 - 2⁸ = 165670213 is a prime.

It is a super-2 number, since 2×165670469² = 54893408597359922, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (165670409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82835234 + 82835235.

It is an arithmetic number, because the mean of its divisors is an integer number (82835235).

Almost surely, 2^165670469 is an apocalyptic number.

It is an amenable number.

165670469 is a deficient number, since it is larger than the sum of its proper divisors (1).

165670469 is an equidigital number, since it uses as much as digits as its factorization.

165670469 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 272160, while the sum is 44.

The square root of 165670469 is about 12871.3040908837. The cubic root of 165670469 is about 549.2225588823. Note that the first 3 decimals are identical.

The spelling of 165670469 in words is "one hundred sixty-five million, six hundred seventy thousand, four hundred sixty-nine".