538764169 has 4 divisors (see below), whose sum is σ = 540709444. Its totient is φ = 536818896.

The previous prime is 538764151. The next prime is 538764173. The reversal of 538764169 is 961467835.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 291897225 + 246866944 = 17085^2 + 15712^2 .

It is a cyclic number.

It is not a de Polignac number, because 538764169 - 2⁷ = 538764041 is a prime.

It is a super-2 number, since 2×538764169² = 580533659596521122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (538765169) 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, 972222 + ... + 972775.

It is an arithmetic number, because the mean of its divisors is an integer number (135177361).

Almost surely, 2^538764169 is an apocalyptic number.

It is an amenable number.

538764169 is a deficient number, since it is larger than the sum of its proper divisors (1945275).

538764169 is a wasteful number, since it uses less digits than its factorization.

538764169 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1945274.

The product of its digits is 1088640, while the sum is 49.

The square root of 538764169 is about 23211.2939966733. The cubic root of 538764169 is about 813.7035953947.

The spelling of 538764169 in words is "five hundred thirty-eight million, seven hundred sixty-four thousand, one hundred sixty-nine".