538383631 has 4 divisors (see below), whose sum is σ = 543714264. Its totient is φ = 533053000.

The previous prime is 538383619. The next prime is 538383647. The reversal of 538383631 is 136383835.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 538383631 - 2⁹ = 538383119 is a prime.

It is a super-2 number, since 2×538383631² = 579713868257488322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (538383431) 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, 2665165 + ... + 2665366.

It is an arithmetic number, because the mean of its divisors is an integer number (135928566).

Almost surely, 2^538383631 is an apocalyptic number.

538383631 is a deficient number, since it is larger than the sum of its proper divisors (5330633).

538383631 is a wasteful number, since it uses less digits than its factorization.

538383631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5330632.

The product of its digits is 155520, while the sum is 40.

The square root of 538383631 is about 23203.0952892066. The cubic root of 538383631 is about 813.5119728582.

The spelling of 538383631 in words is "five hundred thirty-eight million, three hundred eighty-three thousand, six hundred thirty-one".