1319161863 has 4 divisors (see below), whose sum is σ = 1758882488. Its totient is φ = 879441240.

The previous prime is 1319161853. The next prime is 1319161867. The reversal of 1319161863 is 3681619131.

It is a happy number.

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

It is not a de Polignac number, because 1319161863 - 2⁶ = 1319161799 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 (1319161867) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 219860308 + ... + 219860313.

It is an arithmetic number, because the mean of its divisors is an integer number (439720622).

Almost surely, 2^1319161863 is an apocalyptic number.

1319161863 is a deficient number, since it is larger than the sum of its proper divisors (439720625).

1319161863 is an equidigital number, since it uses as much as digits as its factorization.

1319161863 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 439720624.

The product of its digits is 23328, while the sum is 39.

The square root of 1319161863 is about 36320.2679367870. The cubic root of 1319161863 is about 1096.7290886373.

The spelling of 1319161863 in words is "one billion, three hundred nineteen million, one hundred sixty-one thousand, eight hundred sixty-three".