1011852509 has 2 divisors, whose sum is σ = 1011852510. Its totient is φ = 1011852508.

The previous prime is 1011852421. The next prime is 1011852539. The reversal of 1011852509 is 9052581101.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 871548484 + 140304025 = 29522^2 + 11845^2 .

It is a cyclic number.

It is not a de Polignac number, because 1011852509 - 2²⁸ = 743417053 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1011852539) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 505926254 + 505926255.

It is an arithmetic number, because the mean of its divisors is an integer number (505926255).

Almost surely, 2^1011852509 is an apocalyptic number.

It is an amenable number.

1011852509 is a deficient number, since it is larger than the sum of its proper divisors (1).

1011852509 is an equidigital number, since it uses as much as digits as its factorization.

1011852509 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3600, while the sum is 32.

The square root of 1011852509 is about 31809.6291867730. The cubic root of 1011852509 is about 1003.9353292022.

The spelling of 1011852509 in words is "one billion, eleven million, eight hundred fifty-two thousand, five hundred nine".