1538863163 has 4 divisors (see below), whose sum is σ = 1591927440. Its totient is φ = 1485798888.

The previous prime is 1538863147. The next prime is 1538863201. The reversal of 1538863163 is 3613688351.

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

It is a cyclic number.

It is not a de Polignac number, because 1538863163 - 2⁴ = 1538863147 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1538863763) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26532095 + ... + 26532152.

It is an arithmetic number, because the mean of its divisors is an integer number (397981860).

Almost surely, 2^1538863163 is an apocalyptic number.

1538863163 is a deficient number, since it is larger than the sum of its proper divisors (53064277).

1538863163 is an equidigital number, since it uses as much as digits as its factorization.

1538863163 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53064276.

The product of its digits is 311040, while the sum is 44.

The square root of 1538863163 is about 39228.3464219434. The cubic root of 1538863163 is about 1154.5161202175.

The spelling of 1538863163 in words is "one billion, five hundred thirty-eight million, eight hundred sixty-three thousand, one hundred sixty-three".