1365163803 has 12 divisors (see below), whose sum is σ = 2025198448. Its totient is φ = 885511440.

The previous prime is 1365163783. The next prime is 1365163823. The reversal of 1365163803 is 3083615631.

It is a happy number.

1365163803 is a `hidden beast` number, since 13 + 6 + 5 + 1 + 638 + 0 + 3 = 666.

It is an interprime number because it is at equal distance from previous prime (1365163783) and next prime (1365163823).

It is not a de Polignac number, because 1365163803 - 2¹² = 1365159707 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1365163823) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 2049463 + ... + 2050128.

Almost surely, 2^1365163803 is an apocalyptic number.

1365163803 is a deficient number, since it is larger than the sum of its proper divisors (660034645).

1365163803 is a wasteful number, since it uses less digits than its factorization.

1365163803 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4099634 (or 4099631 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 36.

The square root of 1365163803 is about 36948.1231323054. The cubic root of 1365163803 is about 1109.3321207448.

The spelling of 1365163803 in words is "one billion, three hundred sixty-five million, one hundred sixty-three thousand, eight hundred three".