1298864086 has 16 divisors (see below), whose sum is σ = 2102716224. Its totient is φ = 598175424.

The previous prime is 1298864059. The next prime is 1298864089. The reversal of 1298864086 is 6804688921.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1298864089) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41911 + ... + 65986.

It is an arithmetic number, because the mean of its divisors is an integer number (131419764).

Almost surely, 2^1298864086 is an apocalyptic number.

1298864086 is a deficient number, since it is larger than the sum of its proper divisors (803852138).

1298864086 is a wasteful number, since it uses less digits than its factorization.

1298864086 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108375.

The product of its (nonzero) digits is 1327104, while the sum is 52.

The square root of 1298864086 is about 36039.7570191587. The cubic root of 1298864086 is about 1091.0749113396.

The spelling of 1298864086 in words is "one billion, two hundred ninety-eight million, eight hundred sixty-four thousand, eighty-six".