1009161239 has 2 divisors, whose sum is σ = 1009161240. Its totient is φ = 1009161238.

The previous prime is 1009161233. The next prime is 1009161253. The reversal of 1009161239 is 9321619001.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1009161239 - 2⁸ = 1009160983 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1009161233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 504580619 + 504580620.

It is an arithmetic number, because the mean of its divisors is an integer number (504580620).

Almost surely, 2^1009161239 is an apocalyptic number.

1009161239 is a deficient number, since it is larger than the sum of its proper divisors (1).

1009161239 is an equidigital number, since it uses as much as digits as its factorization.

1009161239 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2916, while the sum is 32.

The square root of 1009161239 is about 31767.2982640954. The cubic root of 1009161239 is about 1003.0444681409.

The spelling of 1009161239 in words is "one billion, nine million, one hundred sixty-one thousand, two hundred thirty-nine".