1009670521 has 2 divisors, whose sum is σ = 1009670522. Its totient is φ = 1009670520.

The previous prime is 1009670449. The next prime is 1009670539. The reversal of 1009670521 is 1250769001.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1008380025 + 1290496 = 31755^2 + 1136^2 .

It is a cyclic number.

It is not a de Polignac number, because 1009670521 - 2¹⁵ = 1009637753 is a prime.

It is a super-2 number, since 2×1009670521² = 2038869121952822882, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1009670561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 504835260 + 504835261.

It is an arithmetic number, because the mean of its divisors is an integer number (504835261).

Almost surely, 2^1009670521 is an apocalyptic number.

It is an amenable number.

1009670521 is a deficient number, since it is larger than the sum of its proper divisors (1).

1009670521 is an equidigital number, since it uses as much as digits as its factorization.

1009670521 is an odious number, because the sum of its binary digits is odd.

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

The square root of 1009670521 is about 31775.3130747755. The cubic root of 1009670521 is about 1003.2131714710.

The spelling of 1009670521 in words is "one billion, nine million, six hundred seventy thousand, five hundred twenty-one".