1298826985 has 8 divisors (see below), whose sum is σ = 1640623680. Its totient is φ = 984374064.

The previous prime is 1298826967. The next prime is 1298827027. The reversal of 1298826985 is 5896288921.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1298826985 - 2¹³ = 1298818793 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6835837 + ... + 6836026.

It is an arithmetic number, because the mean of its divisors is an integer number (205077960).

Almost surely, 2^1298826985 is an apocalyptic number.

It is an amenable number.

1298826985 is a deficient number, since it is larger than the sum of its proper divisors (341796695).

1298826985 is a wasteful number, since it uses less digits than its factorization.

1298826985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13671887.

The product of its digits is 4976640, while the sum is 58.

The square root of 1298826985 is about 36039.2422922569. The cubic root of 1298826985 is about 1091.0645226838.

The spelling of 1298826985 in words is "one billion, two hundred ninety-eight million, eight hundred twenty-six thousand, nine hundred eighty-five".