1012497309 has 6 divisors (see below), whose sum is σ = 1462496126. Its totient is φ = 674998200.

The previous prime is 1012497301. The next prime is 1012497379. The reversal of 1012497309 is 9037942101.

1012497309 is a `hidden beast` number, since 101 + 249 + 7 + 309 = 666.

It can be written as a sum of positive squares in only one way, i.e., 997170084 + 15327225 = 31578^2 + 3915^2 .

It is not a de Polignac number, because 1012497309 - 2³ = 1012497301 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1012497301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 56249842 + ... + 56249859.

Almost surely, 2^1012497309 is an apocalyptic number.

It is an amenable number.

1012497309 is a deficient number, since it is larger than the sum of its proper divisors (449998817).

1012497309 is a wasteful number, since it uses less digits than its factorization.

1012497309 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112499707 (or 112499704 counting only the distinct ones).

The product of its (nonzero) digits is 13608, while the sum is 36.

The square root of 1012497309 is about 31819.7628683810. The cubic root of 1012497309 is about 1004.1485355205.

The spelling of 1012497309 in words is "one billion, twelve million, four hundred ninety-seven thousand, three hundred nine".