538736986 has 4 divisors (see below), whose sum is σ = 808105482. Its totient is φ = 269368492.

The previous prime is 538736959. The next prime is 538736993. The reversal of 538736986 is 689637835.

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

It can be written as a sum of positive squares in only one way, i.e., 421686225 + 117050761 = 20535^2 + 10819^2 .

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 134684245 + ... + 134684248.

Almost surely, 2^538736986 is an apocalyptic number.

538736986 is a deficient number, since it is larger than the sum of its proper divisors (269368496).

538736986 is a wasteful number, since it uses less digits than its factorization.

538736986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 269368495.

The product of its digits is 6531840, while the sum is 55.

The square root of 538736986 is about 23210.7084338242. The cubic root of 538736986 is about 813.6899102005.

The spelling of 538736986 in words is "five hundred thirty-eight million, seven hundred thirty-six thousand, nine hundred eighty-six".