1378267163 has 48 divisors (see below), whose sum is σ = 1901560320. Its totient is φ = 972062208.

The previous prime is 1378267159. The next prime is 1378267171. The reversal of 1378267163 is 3617628731.

It is not a de Polignac number, because 1378267163 - 2² = 1378267159 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1378267103) 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 in 47 ways as a sum of consecutive naturals, for example, 380306 + ... + 383912.

It is an arithmetic number, because the mean of its divisors is an integer number (39615840).

Almost surely, 2^1378267163 is an apocalyptic number.

1378267163 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1378267163 is a deficient number, since it is larger than the sum of its proper divisors (523293157).

1378267163 is a wasteful number, since it uses less digits than its factorization.

1378267163 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3676 (or 3663 counting only the distinct ones).

The product of its digits is 254016, while the sum is 44.

The square root of 1378267163 is about 37125.0207137989. The cubic root of 1378267163 is about 1112.8700886794.

The spelling of 1378267163 in words is "one billion, three hundred seventy-eight million, two hundred sixty-seven thousand, one hundred sixty-three".