1010428609 has 4 divisors (see below), whose sum is σ = 1069865604. Its totient is φ = 950991616.

The previous prime is 1010428537. The next prime is 1010428633. The reversal of 1010428609 is 9068240101.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 584914225 + 425514384 = 24185^2 + 20628^2 .

It is a cyclic number.

It is not a de Polignac number, because 1010428609 - 2¹¹ = 1010426561 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1010438609) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29718472 + ... + 29718505.

It is an arithmetic number, because the mean of its divisors is an integer number (267466401).

Almost surely, 2^1010428609 is an apocalyptic number.

It is an amenable number.

1010428609 is a deficient number, since it is larger than the sum of its proper divisors (59436995).

1010428609 is an equidigital number, since it uses as much as digits as its factorization.

1010428609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59436994.

The product of its (nonzero) digits is 3456, while the sum is 31.

The square root of 1010428609 is about 31787.2397197366. The cubic root of 1010428609 is about 1003.4641885403.

The spelling of 1010428609 in words is "one billion, ten million, four hundred twenty-eight thousand, six hundred nine".