538678403 has 2 divisors, whose sum is σ = 538678404. Its totient is φ = 538678402.

The previous prime is 538678391. The next prime is 538678409. The reversal of 538678403 is 304876835.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 538678403 - 2²² = 534484099 is a prime.

It is not a weakly prime, because it can be changed into another prime (538678409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 269339201 + 269339202.

It is an arithmetic number, because the mean of its divisors is an integer number (269339202).

Almost surely, 2^538678403 is an apocalyptic number.

538678403 is a deficient number, since it is larger than the sum of its proper divisors (1).

538678403 is an equidigital number, since it uses as much as digits as its factorization.

538678403 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 483840, while the sum is 44.

The square root of 538678403 is about 23209.4464173534. The cubic root of 538678403 is about 813.6604152118.

The spelling of 538678403 in words is "five hundred thirty-eight million, six hundred seventy-eight thousand, four hundred three".