798145881 has 16 divisors (see below), whose sum is σ = 1147023360. Its totient is φ = 490752000.

The previous prime is 798145853. The next prime is 798145883. The reversal of 798145881 is 188541897.

It is a happy number.

It is not a de Polignac number, because 798145881 - 2¹¹ = 798143833 is a prime.

It is a super-2 number, since 2×798145881² = 1274073694714532322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (798145883) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 41881 + ... + 57881.

It is an arithmetic number, because the mean of its divisors is an integer number (71688960).

Almost surely, 2^798145881 is an apocalyptic number.

It is an amenable number.

798145881 is a deficient number, since it is larger than the sum of its proper divisors (348877479).

798145881 is a wasteful number, since it uses less digits than its factorization.

798145881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17296.

The product of its digits is 645120, while the sum is 51.

The square root of 798145881 is about 28251.4757313667. The cubic root of 798145881 is about 927.6000404536.

The spelling of 798145881 in words is "seven hundred ninety-eight million, one hundred forty-five thousand, eight hundred eighty-one".