1538319836 has 12 divisors (see below), whose sum is σ = 2757720000. Its totient is φ = 750399840.

The previous prime is 1538319829. The next prime is 1538319869. The reversal of 1538319836 is 6389138351.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4689836 + ... + 4690163.

It is an arithmetic number, because the mean of its divisors is an integer number (229810000).

Almost surely, 2^1538319836 is an apocalyptic number.

It is an amenable number.

1538319836 is a deficient number, since it is larger than the sum of its proper divisors (1219400164).

1538319836 is a wasteful number, since it uses less digits than its factorization.

1538319836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9380044 (or 9380042 counting only the distinct ones).

The product of its digits is 466560, while the sum is 47.

The square root of 1538319836 is about 39221.4206269992. The cubic root of 1538319836 is about 1154.3802290752.

The spelling of 1538319836 in words is "one billion, five hundred thirty-eight million, three hundred nineteen thousand, eight hundred thirty-six".