538618965 has 16 divisors (see below), whose sum is σ = 876398400. Its totient is φ = 282394112.

The previous prime is 538618957. The next prime is 538618967. The reversal of 538618965 is 569816835.

It is a cyclic number.

It is not a de Polignac number, because 538618965 - 2³ = 538618957 is a prime.

It is a super-2 number, since 2×538618965² = 580220778915342450, which contains 22 as substring.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (538618967) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 303420 + ... + 305189.

It is an arithmetic number, because the mean of its divisors is an integer number (54774900).

Almost surely, 2^538618965 is an apocalyptic number.

It is an amenable number.

538618965 is a deficient number, since it is larger than the sum of its proper divisors (337779435).

538618965 is a wasteful number, since it uses less digits than its factorization.

538618965 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 608676.

The product of its digits is 1555200, while the sum is 51.

The square root of 538618965 is about 23208.1659120233. The cubic root of 538618965 is about 813.6304875677.

It can be divided in two parts, 53861 and 8965, that added together give a palindrome (62826).

The spelling of 538618965 in words is "five hundred thirty-eight million, six hundred eighteen thousand, nine hundred sixty-five".