1309485141 has 6 divisors (see below), whose sum is σ = 1891478550. Its totient is φ = 872990088.

The previous prime is 1309485127. The next prime is 1309485143. The reversal of 1309485141 is 1415849031.

1309485141 is a `hidden beast` number, since 1 + 30 + 9 + 485 + 141 = 666.

It can be written as a sum of positive squares in only one way, i.e., 1218359025 + 91126116 = 34905^2 + 9546^2 .

It is not a de Polignac number, because 1309485141 - 2²¹ = 1307387989 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1309485096 and 1309485105.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1309485143) 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 5 ways as a sum of consecutive naturals, for example, 72749166 + ... + 72749183.

It is an arithmetic number, because the mean of its divisors is an integer number (315246425).

Almost surely, 2^1309485141 is an apocalyptic number.

It is an amenable number.

1309485141 is a deficient number, since it is larger than the sum of its proper divisors (581993409).

1309485141 is a wasteful number, since it uses less digits than its factorization.

1309485141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145498355 (or 145498352 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 36.

The square root of 1309485141 is about 36186.8089364066. The cubic root of 1309485141 is about 1094.0408163781.

The spelling of 1309485141 in words is "one billion, three hundred nine million, four hundred eighty-five thousand, one hundred forty-one".