1011734509 has 2 divisors, whose sum is σ = 1011734510. Its totient is φ = 1011734508.

The previous prime is 1011734489. The next prime is 1011734551. The reversal of 1011734509 is 9054371101.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 819218884 + 192515625 = 28622^2 + 13875^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1011734509 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1011734809) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 505867254 + 505867255.

It is an arithmetic number, because the mean of its divisors is an integer number (505867255).

Almost surely, 2^1011734509 is an apocalyptic number.

It is an amenable number.

1011734509 is a deficient number, since it is larger than the sum of its proper divisors (1).

1011734509 is an equidigital number, since it uses as much as digits as its factorization.

1011734509 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3780, while the sum is 31.

The square root of 1011734509 is about 31807.7743484199. The cubic root of 1011734509 is about 1003.8963021130.

The spelling of 1011734509 in words is "one billion, eleven million, seven hundred thirty-four thousand, five hundred nine".