538238137 has 4 divisors (see below), whose sum is σ = 566566480. Its totient is φ = 509909796.

The previous prime is 538238131. The next prime is 538238147. The reversal of 538238137 is 731832835.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-538238137 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 538238137.

It is not an unprimeable number, because it can be changed into a prime (538238131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14164143 + ... + 14164180.

It is an arithmetic number, because the mean of its divisors is an integer number (141641620).

Almost surely, 2^538238137 is an apocalyptic number.

It is an amenable number.

538238137 is a deficient number, since it is larger than the sum of its proper divisors (28328343).

538238137 is a wasteful number, since it uses less digits than its factorization.

538238137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28328342.

The product of its digits is 120960, while the sum is 40.

The square root of 538238137 is about 23199.9598491032. The cubic root of 538238137 is about 813.4386844892.

The spelling of 538238137 in words is "five hundred thirty-eight million, two hundred thirty-eight thousand, one hundred thirty-seven".