1538388334 has 16 divisors (see below), whose sum is σ = 2641291488. Its totient is φ = 658295712.

The previous prime is 1538388329. The next prime is 1538388343. The reversal of 1538388334 is 4338838351.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 74997 + ... + 93280.

It is an arithmetic number, because the mean of its divisors is an integer number (165080718).

Almost surely, 2^1538388334 is an apocalyptic number.

1538388334 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

1538388334 is a deficient number, since it is larger than the sum of its proper divisors (1102903154).

1538388334 is a wasteful number, since it uses less digits than its factorization.

1538388334 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 168939.

The product of its digits is 829440, while the sum is 46.

The square root of 1538388334 is about 39222.2938390911. The cubic root of 1538388334 is about 1154.3973628254.

The spelling of 1538388334 in words is "one billion, five hundred thirty-eight million, three hundred eighty-eight thousand, three hundred thirty-four".