538201869538 has 8 divisors (see below), whose sum is σ = 829121799132. Its totient is φ = 261827936496.

The previous prime is 538201869533. The next prime is 538201869563. The reversal of 538201869538 is 835968102835.

It can be written as a sum of positive squares in 2 ways, for example, as 528248415249 + 9953454289 = 726807^2 + 99767^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×538201869538² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (538201869533) 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, 3636499045 + ... + 3636499192.

Almost surely, 2^538201869538 is an apocalyptic number.

538201869538 is a deficient number, since it is larger than the sum of its proper divisors (290919929594).

538201869538 is a wasteful number, since it uses less digits than its factorization.

538201869538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7272998276.

The product of its (nonzero) digits is 12441600, while the sum is 58.

The spelling of 538201869538 in words is "five hundred thirty-eight billion, two hundred one million, eight hundred sixty-nine thousand, five hundred thirty-eight".