1020534709 has 2 divisors, whose sum is σ = 1020534710. Its totient is φ = 1020534708.

The previous prime is 1020534689. The next prime is 1020534743. The reversal of 1020534709 is 9074350201.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 933485809 + 87048900 = 30553^2 + 9330^2 .

It is a cyclic number.

It is not a de Polignac number, because 1020534709 - 2⁵ = 1020534677 is a prime.

It is a plaindrome in base 13.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1020534799) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 510267354 + 510267355.

It is an arithmetic number, because the mean of its divisors is an integer number (510267355).

Almost surely, 2^1020534709 is an apocalyptic number.

It is an amenable number.

1020534709 is a deficient number, since it is larger than the sum of its proper divisors (1).

1020534709 is an equidigital number, since it uses as much as digits as its factorization.

1020534709 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7560, while the sum is 31.

The square root of 1020534709 is about 31945.8089426454. The cubic root of 1020534709 is about 1006.7985775977.

The spelling of 1020534709 in words is "one billion, twenty million, five hundred thirty-four thousand, seven hundred nine".