1285479833 has 4 divisors (see below), whose sum is σ = 1402341648. Its totient is φ = 1168618020.

The previous prime is 1285479817. The next prime is 1285479859. The reversal of 1285479833 is 3389745821.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1285479833 - 2⁴ = 1285479817 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1285449833) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 58430891 + ... + 58430912.

It is an arithmetic number, because the mean of its divisors is an integer number (350585412).

Almost surely, 2^1285479833 is an apocalyptic number.

It is an amenable number.

1285479833 is a deficient number, since it is larger than the sum of its proper divisors (116861815).

1285479833 is a wasteful number, since it uses less digits than its factorization.

1285479833 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116861814.

The product of its digits is 1451520, while the sum is 50.

The square root of 1285479833 is about 35853.5888440753. The cubic root of 1285479833 is about 1087.3142736161.

The spelling of 1285479833 in words is "one billion, two hundred eighty-five million, four hundred seventy-nine thousand, eight hundred thirty-three".