1002149539 has 2 divisors, whose sum is σ = 1002149540. Its totient is φ = 1002149538.

The previous prime is 1002149501. The next prime is 1002149567. The reversal of 1002149539 is 9359412001.

It is a strong prime.

It is an emirp because it is prime and its reverse (9359412001) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1002149539 - 2²⁵ = 968595107 is a prime.

It is not a weakly prime, because it can be changed into another prime (1002149569) 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, 501074769 + 501074770.

It is an arithmetic number, because the mean of its divisors is an integer number (501074770).

Almost surely, 2^1002149539 is an apocalyptic number.

1002149539 is a deficient number, since it is larger than the sum of its proper divisors (1).

1002149539 is an equidigital number, since it uses as much as digits as its factorization.

1002149539 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9720, while the sum is 34.

The square root of 1002149539 is about 31656.7455528834. The cubic root of 1002149539 is about 1000.7160002213.

The spelling of 1002149539 in words is "one billion, two million, one hundred forty-nine thousand, five hundred thirty-nine".