1309495480 has 32 divisors (see below), whose sum is σ = 2973405600. Its totient is φ = 518990976.

The previous prime is 1309495423. The next prime is 1309495483. The reversal of 1309495480 is 845949031.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1309495483) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 145812 + ... + 154531.

It is an arithmetic number, because the mean of its divisors is an integer number (92918925).

Almost surely, 2^1309495480 is an apocalyptic number.

1309495480 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1309495480 is an abundant number, since it is smaller than the sum of its proper divisors (1663910120).

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

1309495480 is a wasteful number, since it uses less digits than its factorization.

1309495480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 300463 (or 300459 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 43.

The square root of 1309495480 is about 36186.9517920479. The cubic root of 1309495480 is about 1094.0436956925.

The spelling of 1309495480 in words is "one billion, three hundred nine million, four hundred ninety-five thousand, four hundred eighty".