169106437 has 4 divisors (see below), whose sum is σ = 169132716. Its totient is φ = 169080160.

The previous prime is 169106417. The next prime is 169106461. The reversal of 169106437 is 734601961.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 127103076 + 42003361 = 11274^2 + 6481^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-169106437 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 169106396 and 169106405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (169106417) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3753 + ... + 18769.

It is an arithmetic number, because the mean of its divisors is an integer number (42283179).

Almost surely, 2^169106437 is an apocalyptic number.

It is an amenable number.

169106437 is a deficient number, since it is larger than the sum of its proper divisors (26279).

169106437 is a wasteful number, since it uses less digits than its factorization.

169106437 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26278.

The product of its (nonzero) digits is 27216, while the sum is 37.

The square root of 169106437 is about 13004.0930864094. The cubic root of 169106437 is about 552.9935252946.

The spelling of 169106437 in words is "one hundred sixty-nine million, one hundred six thousand, four hundred thirty-seven".