1319830420 has 12 divisors (see below), whose sum is σ = 2771643924. Its totient is φ = 527932160.

The previous prime is 1319830409. The next prime is 1319830423. The reversal of 1319830420 is 240389131.

It can be written as a sum of positive squares in 2 ways, for example, as 1024128004 + 295702416 = 32002^2 + 17196^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1319830423) 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, 32995741 + ... + 32995780.

It is an arithmetic number, because the mean of its divisors is an integer number (230970327).

Almost surely, 2^1319830420 is an apocalyptic number.

1319830420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1319830420 is an abundant number, since it is smaller than the sum of its proper divisors (1451813504).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1319830420 is a wasteful number, since it uses less digits than its factorization.

1319830420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65991530 (or 65991528 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 31.

The square root of 1319830420 is about 36329.4704062693. The cubic root of 1319830420 is about 1096.9143330457.

The spelling of 1319830420 in words is "one billion, three hundred nineteen million, eight hundred thirty thousand, four hundred twenty".