1002531389 has 2 divisors, whose sum is σ = 1002531390. Its totient is φ = 1002531388.

The previous prime is 1002531379. The next prime is 1002531433. The reversal of 1002531389 is 9831352001.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 880605625 + 121925764 = 29675^2 + 11042^2 .

It is a cyclic number.

It is not a de Polignac number, because 1002531389 - 2⁴ = 1002531373 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1002531329) 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, 501265694 + 501265695.

It is an arithmetic number, because the mean of its divisors is an integer number (501265695).

Almost surely, 2^1002531389 is an apocalyptic number.

It is an amenable number.

1002531389 is a deficient number, since it is larger than the sum of its proper divisors (1).

1002531389 is an equidigital number, since it uses as much as digits as its factorization.

1002531389 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6480, while the sum is 32.

The square root of 1002531389 is about 31662.7760785437. The cubic root of 1002531389 is about 1000.8430853407.

It can be divided in two parts, 10025 and 31389, that added together give a palindrome (41414).

The spelling of 1002531389 in words is "one billion, two million, five hundred thirty-one thousand, three hundred eighty-nine".