1322913780 has 54 divisors (see below), whose sum is σ = 4014319218. Its totient is φ = 352646880.

The previous prime is 1322913763. The next prime is 1322913833. The reversal of 1322913780 is 873192231.

It can be written as a sum of positive squares in only one way, i.e., 1058331024 + 264582756 = 32532^2 + 16266^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 486625 + ... + 489335.

Almost surely, 2^1322913780 is an apocalyptic number.

1322913780 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1322913780 is an abundant number, since it is smaller than the sum of its proper divisors (2691405438).

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

1322913780 is an equidigital number, since it uses as much as digits as its factorization.

1322913780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5437 (or 2721 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 36.

The square root of 1322913780 is about 36371.8817220116. The cubic root of 1322913780 is about 1097.7678647686.

The spelling of 1322913780 in words is "one billion, three hundred twenty-two million, nine hundred thirteen thousand, seven hundred eighty".