1602242989 has 2 divisors, whose sum is σ = 1602242990. Its totient is φ = 1602242988.

The previous prime is 1602242987. The next prime is 1602243017. The reversal of 1602242989 is 9892422061.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1466124100 + 136118889 = 38290^2 + 11667^2 .

It is a cyclic number.

It is not a de Polignac number, because 1602242989 - 2¹ = 1602242987 is a prime.

Together with 1602242987, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1602242987) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 801121494 + 801121495.

It is an arithmetic number, because the mean of its divisors is an integer number (801121495).

Almost surely, 2^1602242989 is an apocalyptic number.

It is an amenable number.

1602242989 is a deficient number, since it is larger than the sum of its proper divisors (1).

1602242989 is an equidigital number, since it uses as much as digits as its factorization.

1602242989 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 124416, while the sum is 43.

The square root of 1602242989 is about 40028.0275432103. The cubic root of 1602242989 is about 1170.1533850578.

The spelling of 1602242989 in words is "one billion, six hundred two million, two hundred forty-two thousand, nine hundred eighty-nine".