1309532970 has 16 divisors (see below), whose sum is σ = 3142879200. Its totient is φ = 349208784.

The previous prime is 1309532947. The next prime is 1309532977. The reversal of 1309532970 is 792359031.

It is not an unprimeable number, because it can be changed into a prime (1309532977) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21825520 + ... + 21825579.

It is an arithmetic number, because the mean of its divisors is an integer number (196429950).

Almost surely, 2^1309532970 is an apocalyptic number.

1309532970 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1309532970 is an abundant number, since it is smaller than the sum of its proper divisors (1833346230).

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

1309532970 is a wasteful number, since it uses less digits than its factorization.

1309532970 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43651109.

The product of its (nonzero) digits is 51030, while the sum is 39.

The square root of 1309532970 is about 36187.4697927335. The cubic root of 1309532970 is about 1094.0541361783.

The spelling of 1309532970 in words is "one billion, three hundred nine million, five hundred thirty-two thousand, nine hundred seventy".