1285330159 has 4 divisors (see below), whose sum is σ = 1285465216. Its totient is φ = 1285195104.

The previous prime is 1285330147. The next prime is 1285330201. The reversal of 1285330159 is 9510335821.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9510335821 = 7 ⋅1358619403.

It is a cyclic number.

It is not a de Polignac number, because 1285330159 - 2¹⁷ = 1285199087 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1285330559) 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 in 3 ways as a sum of consecutive naturals, for example, 52074 + ... + 72679.

It is an arithmetic number, because the mean of its divisors is an integer number (321366304).

Almost surely, 2^1285330159 is an apocalyptic number.

1285330159 is a deficient number, since it is larger than the sum of its proper divisors (135057).

1285330159 is a wasteful number, since it uses less digits than its factorization.

1285330159 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135056.

The product of its (nonzero) digits is 32400, while the sum is 37.

The square root of 1285330159 is about 35851.5014887801. The cubic root of 1285330159 is about 1087.2720717370.

The spelling of 1285330159 in words is "one billion, two hundred eighty-five million, three hundred thirty thousand, one hundred fifty-nine".