1309653091 has 2 divisors, whose sum is σ = 1309653092. Its totient is φ = 1309653090.

The previous prime is 1309653043. The next prime is 1309653101. The reversal of 1309653091 is 1903569031.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1309653091 - 2¹³ = 1309644899 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1309653091.

It is not a weakly prime, because it can be changed into another prime (1309653791) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 654826545 + 654826546.

It is an arithmetic number, because the mean of its divisors is an integer number (654826546).

Almost surely, 2^1309653091 is an apocalyptic number.

1309653091 is a deficient number, since it is larger than the sum of its proper divisors (1).

1309653091 is an equidigital number, since it uses as much as digits as its factorization.

1309653091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 21870, while the sum is 37.

The square root of 1309653091 is about 36189.1294589964. The cubic root of 1309653091 is about 1094.0875869993.

The spelling of 1309653091 in words is "one billion, three hundred nine million, six hundred fifty-three thousand, ninety-one".