797541891 has 16 divisors (see below), whose sum is σ = 1120506240. Its totient is φ = 503193600.

The previous prime is 797541869. The next prime is 797541907. The reversal of 797541891 is 198145797.

It is a happy number.

797541891 is a nontrivial binomial coefficient, being equal to C(39939, 2).

It is not a de Polignac number, because 797541891 - 2⁹ = 797541379 is a prime.

It is not an unprimeable number, because it can be changed into a prime (797541851) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 53251 + ... + 66563.

It is an arithmetic number, because the mean of its divisors is an integer number (70031640).

Almost surely, 2^797541891 is an apocalyptic number.

797541891 is the 39938-th triangular number.

797541891 is a deficient number, since it is larger than the sum of its proper divisors (322964349).

797541891 is a wasteful number, since it uses less digits than its factorization.

797541891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14386.

The product of its digits is 635040, while the sum is 51.

The square root of 797541891 is about 28240.7841782058. The cubic root of 797541891 is about 927.3659969680.

The spelling of 797541891 in words is "seven hundred ninety-seven million, five hundred forty-one thousand, eight hundred ninety-one".