1002523139 has 2 divisors, whose sum is σ = 1002523140. Its totient is φ = 1002523138.

The previous prime is 1002523079. The next prime is 1002523147. The reversal of 1002523139 is 9313252001.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1002523139 - 2⁸ = 1002522883 is a prime.

It is not a weakly prime, because it can be changed into another prime (1002523169) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 501261569 + 501261570.

It is an arithmetic number, because the mean of its divisors is an integer number (501261570).

Almost surely, 2^1002523139 is an apocalyptic number.

1002523139 is a deficient number, since it is larger than the sum of its proper divisors (1).

1002523139 is an equidigital number, since it uses as much as digits as its factorization.

1002523139 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1620, while the sum is 26.

The square root of 1002523139 is about 31662.6457991116. The cubic root of 1002523139 is about 1000.8403399643.

The spelling of 1002523139 in words is "one billion, two million, five hundred twenty-three thousand, one hundred thirty-nine".