1380313128 has 16 divisors (see below), whose sum is σ = 3450782880. Its totient is φ = 460104368.

The previous prime is 1380313117. The next prime is 1380313169. The reversal of 1380313128 is 8213130831.

It is a junction number, because it is equal to n+sod(n) for n = 1380313095 and 1380313104.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28756500 + ... + 28756547.

It is an arithmetic number, because the mean of its divisors is an integer number (215673930).

Almost surely, 2^1380313128 is an apocalyptic number.

It is an amenable number.

1380313128 is an abundant number, since it is smaller than the sum of its proper divisors (2070469752).

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

1380313128 is a wasteful number, since it uses less digits than its factorization.

1380313128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57513056 (or 57513052 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 30.

The square root of 1380313128 is about 37152.5655641707. The cubic root of 1380313128 is about 1113.4204821004.

Adding to 1380313128 its reverse (8213130831), we get a palindrome (9593443959).

The spelling of 1380313128 in words is "one billion, three hundred eighty million, three hundred thirteen thousand, one hundred twenty-eight".