1160231509 has 2 divisors, whose sum is σ = 1160231510. Its totient is φ = 1160231508.

The previous prime is 1160231497. The next prime is 1160231537. The reversal of 1160231509 is 9051320611.

It is an a-pointer prime, because the next prime (1160231537) can be obtained adding 1160231509 to its sum of digits (28).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 666414225 + 493817284 = 25815^2 + 22222^2 .

It is a cyclic number.

It is not a de Polignac number, because 1160231509 - 2⁷ = 1160231381 is a prime.

It is a super-2 number, since 2×1160231509² = 2692274308952834162, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1160231549) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 580115754 + 580115755.

It is an arithmetic number, because the mean of its divisors is an integer number (580115755).

Almost surely, 2^1160231509 is an apocalyptic number.

It is an amenable number.

1160231509 is a deficient number, since it is larger than the sum of its proper divisors (1).

1160231509 is an equidigital number, since it uses as much as digits as its factorization.

1160231509 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1620, while the sum is 28.

The square root of 1160231509 is about 34062.1712314409. The cubic root of 1160231509 is about 1050.7874694395.

The spelling of 1160231509 in words is "one billion, one hundred sixty million, two hundred thirty-one thousand, five hundred nine".