168969037 has 4 divisors (see below), whose sum is σ = 169694460. Its totient is φ = 168243616.

The previous prime is 168968983. The next prime is 168969043. The reversal of 168969037 is 730969861.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 730969861 = 3061 ⋅238801.

It can be written as a sum of positive squares in 2 ways, for example, as 49154121 + 119814916 = 7011^2 + 10946^2 .

It is a cyclic number.

It is not a de Polignac number, because 168969037 - 2¹¹ = 168966989 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 (168969737) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 362362 + ... + 362827.

It is an arithmetic number, because the mean of its divisors is an integer number (42423615).

Almost surely, 2^168969037 is an apocalyptic number.

It is an amenable number.

168969037 is a deficient number, since it is larger than the sum of its proper divisors (725423).

168969037 is an equidigital number, since it uses as much as digits as its factorization.

168969037 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 725422.

The product of its (nonzero) digits is 489888, while the sum is 49.

The square root of 168969037 is about 12998.8090608332. The cubic root of 168969037 is about 552.8437145217.

The spelling of 168969037 in words is "one hundred sixty-eight million, nine hundred sixty-nine thousand, thirty-seven".