1309272196 has 12 divisors (see below), whose sum is σ = 2295731340. Its totient is φ = 653348960.

The previous prime is 1309272169. The next prime is 1309272199. The reversal of 1309272196 is 6912729031.

It can be written as a sum of positive squares in 2 ways, for example, as 1026561600 + 282710596 = 32040^2 + 16814^2 .

It is not an unprimeable number, because it can be changed into a prime (1309272199) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 319495 + ... + 323566.

It is an arithmetic number, because the mean of its divisors is an integer number (191310945).

Almost surely, 2^1309272196 is an apocalyptic number.

It is an amenable number.

1309272196 is a deficient number, since it is larger than the sum of its proper divisors (986459144).

1309272196 is a wasteful number, since it uses less digits than its factorization.

1309272196 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 643574 (or 643572 counting only the distinct ones).

The product of its (nonzero) digits is 40824, while the sum is 40.

The square root of 1309272196 is about 36183.8665153408. The cubic root of 1309272196 is about 1093.9815098248.

The spelling of 1309272196 in words is "one billion, three hundred nine million, two hundred seventy-two thousand, one hundred ninety-six".