538637387 has 4 divisors (see below), whose sum is σ = 557211120. Its totient is φ = 520063656.

The previous prime is 538637339. The next prime is 538637389. The reversal of 538637387 is 783736835.

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 538637387 - 2²² = 534443083 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (538637389) 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, 9286823 + ... + 9286880.

It is an arithmetic number, because the mean of its divisors is an integer number (139302780).

Almost surely, 2^538637387 is an apocalyptic number.

538637387 is a deficient number, since it is larger than the sum of its proper divisors (18573733).

538637387 is a wasteful number, since it uses less digits than its factorization.

538637387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18573732.

The product of its digits is 2540160, while the sum is 50.

The square root of 538637387 is about 23208.5627947962. The cubic root of 538637387 is about 813.6397634695.

The spelling of 538637387 in words is "five hundred thirty-eight million, six hundred thirty-seven thousand, three hundred eighty-seven".