1378513163 has 2 divisors, whose sum is σ = 1378513164. Its totient is φ = 1378513162.

The previous prime is 1378513159. The next prime is 1378513217. The reversal of 1378513163 is 3613158731.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1378513163 - 2² = 1378513159 is a prime.

It is a super-4 number, since 4×1378513163⁴ (a number of 38 digits) contains 4444 as substring.

It is not a weakly prime, because it can be changed into another prime (1378513063) by changing a digit.

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, 689256581 + 689256582.

It is an arithmetic number, because the mean of its divisors is an integer number (689256582).

Almost surely, 2^1378513163 is an apocalyptic number.

1378513163 is a deficient number, since it is larger than the sum of its proper divisors (1).

1378513163 is an equidigital number, since it uses as much as digits as its factorization.

1378513163 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 45360, while the sum is 38.

The square root of 1378513163 is about 37128.3336954407. Note that the first 3 decimals coincide. The cubic root of 1378513163 is about 1112.9362949427.

The spelling of 1378513163 in words is "one billion, three hundred seventy-eight million, five hundred thirteen thousand, one hundred sixty-three".