798161490 has 216 divisors, whose sum is σ = 2529284940. Its totient is φ = 173916288.

The previous prime is 798161459. The next prime is 798161549. The reversal of 798161490 is 94161897.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 795409209 + 2752281 = 28203^2 + 1659^2 .

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

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 107 ways as a sum of consecutive naturals, for example, 10103271 + ... + 10103349.

Almost surely, 2^798161490 is an apocalyptic number.

798161490 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 798161490, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1264642470).

798161490 is an abundant number, since it is smaller than the sum of its proper divisors (1731123450).

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

798161490 is a wasteful number, since it uses less digits than its factorization.

798161490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 214 (or 125 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 45.

The square root of 798161490 is about 28251.7519810719. The cubic root of 798161490 is about 927.6060873076.

The spelling of 798161490 in words is "seven hundred ninety-eight million, one hundred sixty-one thousand, four hundred ninety".