798870138 has 16 divisors (see below), whose sum is σ = 1742989536. Its totient is φ = 242081840.

The previous prime is 798870119. The next prime is 798870151. The reversal of 798870138 is 831078897.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6051981 + ... + 6052112.

It is an arithmetic number, because the mean of its divisors is an integer number (108936846).

Almost surely, 2^798870138 is an apocalyptic number.

798870138 is an abundant number, since it is smaller than the sum of its proper divisors (944119398).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

798870138 is a wasteful number, since it uses less digits than its factorization.

798870138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12104109.

The product of its (nonzero) digits is 677376, while the sum is 51.

The square root of 798870138 is about 28264.2908632076. The cubic root of 798870138 is about 927.8805312478.

The spelling of 798870138 in words is "seven hundred ninety-eight million, eight hundred seventy thousand, one hundred thirty-eight".