1318198879 has 8 divisors (see below), whose sum is σ = 1323695952. Its totient is φ = 1312713600.

The previous prime is 1318198877. The next prime is 1318198919. The reversal of 1318198879 is 9788918131.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1318198879 - 2¹ = 1318198877 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1318198877) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 271477 + ... + 276289.

It is an arithmetic number, because the mean of its divisors is an integer number (165461994).

Almost surely, 2^1318198879 is an apocalyptic number.

1318198879 is a deficient number, since it is larger than the sum of its proper divisors (5497073).

1318198879 is an equidigital number, since it uses as much as digits as its factorization.

1318198879 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5897.

The product of its digits is 870912, while the sum is 55.

The square root of 1318198879 is about 36307.0086760119. The cubic root of 1318198879 is about 1096.4621540809.

The spelling of 1318198879 in words is "one billion, three hundred eighteen million, one hundred ninety-eight thousand, eight hundred seventy-nine".