1309448130 has 64 divisors (see below), whose sum is σ = 3233623680. Its totient is φ = 339116544.

The previous prime is 1309448113. The next prime is 1309448159. The reversal of 1309448130 is 318449031.

It is a junction number, because it is equal to n+sod(n) for n = 1309448091 and 1309448100.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1039441 + ... + 1040699.

It is an arithmetic number, because the mean of its divisors is an integer number (50525370).

Almost surely, 2^1309448130 is an apocalyptic number.

1309448130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1309448130, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1616811840).

1309448130 is an abundant number, since it is smaller than the sum of its proper divisors (1924175550).

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

1309448130 is a wasteful number, since it uses less digits than its factorization.

1309448130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2243.

The product of its (nonzero) digits is 10368, while the sum is 33.

The square root of 1309448130 is about 36186.2975447890. The cubic root of 1309448130 is about 1094.0305090380.

Subtracting from 1309448130 its reverse (318449031), we obtain a palindrome (990999099).

The spelling of 1309448130 in words is "one billion, three hundred nine million, four hundred forty-eight thousand, one hundred thirty".