1797897879 has 24 divisors (see below), whose sum is σ = 2744202240. Its totient is φ = 1131962832.

The previous prime is 1797897823. The next prime is 1797897887. The reversal of 1797897879 is 9787987971.

It is not a de Polignac number, because 1797897879 - 2¹¹ = 1797895831 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1797897889) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 38619 + ... + 71324.

It is an arithmetic number, because the mean of its divisors is an integer number (114341760).

Almost surely, 2^1797897879 is an apocalyptic number.

1797897879 is a deficient number, since it is larger than the sum of its proper divisors (946304361).

1797897879 is a wasteful number, since it uses less digits than its factorization.

1797897879 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110051 (or 110048 counting only the distinct ones).

The product of its digits is 112021056, while the sum is 72.

The square root of 1797897879 is about 42401.6259004298. The cubic root of 1797897879 is about 1215.9666767094.

The spelling of 1797897879 in words is "one billion, seven hundred ninety-seven million, eight hundred ninety-seven thousand, eight hundred seventy-nine".