1002137909 has 2 divisors, whose sum is σ = 1002137910. Its totient is φ = 1002137908.

The previous prime is 1002137861. The next prime is 1002137921. The reversal of 1002137909 is 9097312001.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 785400625 + 216737284 = 28025^2 + 14722^2 .

It is a cyclic number.

It is not a de Polignac number, because 1002137909 - 2¹⁶ = 1002072373 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1002131909) 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 as a sum of consecutive naturals, namely, 501068954 + 501068955.

It is an arithmetic number, because the mean of its divisors is an integer number (501068955).

Almost surely, 2^1002137909 is an apocalyptic number.

It is an amenable number.

1002137909 is a deficient number, since it is larger than the sum of its proper divisors (1).

1002137909 is an equidigital number, since it uses as much as digits as its factorization.

1002137909 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3402, while the sum is 32.

The square root of 1002137909 is about 31656.5618632220. The cubic root of 1002137909 is about 1000.7121290851.

The spelling of 1002137909 in words is "one billion, two million, one hundred thirty-seven thousand, nine hundred nine".