3138986506 has 8 divisors (see below), whose sum is σ = 4870841220. Its totient is φ = 1515372768.

The previous prime is 3138986497. The next prime is 3138986519. The reversal of 3138986506 is 6056898313.

It can be written as a sum of positive squares in 2 ways, for example, as 3014998281 + 123988225 = 54909^2 + 11135^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 3138986506.

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 in 3 ways as a sum of consecutive naturals, for example, 27060171 + ... + 27060286.

Almost surely, 2^3138986506 is an apocalyptic number.

3138986506 is a deficient number, since it is larger than the sum of its proper divisors (1731854714).

3138986506 is a wasteful number, since it uses less digits than its factorization.

3138986506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54120488.

The product of its (nonzero) digits is 933120, while the sum is 49.

The square root of 3138986506 is about 56026.6588866407. The cubic root of 3138986506 is about 1464.1867853316.

The spelling of 3138986506 in words is "three billion, one hundred thirty-eight million, nine hundred eighty-six thousand, five hundred six".