169143901 has 6 divisors (see below), whose sum is σ = 173371706. Its totient is φ = 165016800.

The previous prime is 169143883. The next prime is 169143991. The reversal of 169143901 is 109341961.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 1052676 + 168091225 = 1026^2 + 12965^2 .

It is not a de Polignac number, because 169143901 - 2⁷ = 169143773 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (169143991) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 48630 + ... + 51991.

Almost surely, 2^169143901 is an apocalyptic number.

It is an amenable number.

169143901 is a deficient number, since it is larger than the sum of its proper divisors (4227805).

169143901 is an equidigital number, since it uses as much as digits as its factorization.

169143901 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100703 (or 100662 counting only the distinct ones).

The product of its (nonzero) digits is 5832, while the sum is 34.

The square root of 169143901 is about 13005.5334761785. The cubic root of 169143901 is about 553.0343591822.

The spelling of 169143901 in words is "one hundred sixty-nine million, one hundred forty-three thousand, nine hundred one".