538893381 has 32 divisors (see below), whose sum is σ = 827188992. Its totient is φ = 309450240.

The previous prime is 538893361. The next prime is 538893389. The reversal of 538893381 is 183398835.

It is a happy number.

It is not a de Polignac number, because 538893381 - 2⁶ = 538893317 is a prime.

It is a super-2 number, since 2×538893381² = 580812152171222322, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 538893381.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (538893389) 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 31 ways as a sum of consecutive naturals, for example, 29451 + ... + 44103.

It is an arithmetic number, because the mean of its divisors is an integer number (25849656).

Almost surely, 2^538893381 is an apocalyptic number.

It is an amenable number.

538893381 is a deficient number, since it is larger than the sum of its proper divisors (288295611).

538893381 is a wasteful number, since it uses less digits than its factorization.

538893381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14733.

The product of its digits is 622080, while the sum is 48.

The square root of 538893381 is about 23214.0772162065. The cubic root of 538893381 is about 813.7686404681.

The spelling of 538893381 in words is "five hundred thirty-eight million, eight hundred ninety-three thousand, three hundred eighty-one".