538622633 has 4 divisors (see below), whose sum is σ = 542237700. Its totient is φ = 535007568.

The previous prime is 538622629. The next prime is 538622647. The reversal of 538622633 is 336226835.

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

It can be written as a sum of positive squares in 2 ways, for example, as 272019049 + 266603584 = 16493^2 + 16328^2 .

It is a cyclic number.

It is not a de Polignac number, because 538622633 - 2² = 538622629 is a prime.

It is a super-2 number, since 2×538622633² = 580228681559705378, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (538622603) 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, 1807310 + ... + 1807607.

It is an arithmetic number, because the mean of its divisors is an integer number (135559425).

Almost surely, 2^538622633 is an apocalyptic number.

It is an amenable number.

538622633 is a deficient number, since it is larger than the sum of its proper divisors (3615067).

538622633 is a wasteful number, since it uses less digits than its factorization.

538622633 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3615066.

The product of its digits is 155520, while the sum is 38.

The square root of 538622633 is about 23208.2449357981. The cubic root of 538622633 is about 813.6323345071.

The spelling of 538622633 in words is "five hundred thirty-eight million, six hundred twenty-two thousand, six hundred thirty-three".