1318612198 has 16 divisors (see below), whose sum is σ = 2083803120. Its totient is φ = 624070656.

The previous prime is 1318612189. The next prime is 1318612247. The reversal of 1318612198 is 8912168131.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 1318612198.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31990 + ... + 60502.

It is an arithmetic number, because the mean of its divisors is an integer number (130237695).

Almost surely, 2^1318612198 is an apocalyptic number.

1318612198 is a deficient number, since it is larger than the sum of its proper divisors (765190922).

1318612198 is a wasteful number, since it uses less digits than its factorization.

1318612198 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29751.

The product of its digits is 20736, while the sum is 40.

The square root of 1318612198 is about 36312.7002300848. The cubic root of 1318612198 is about 1096.5767400489.

The spelling of 1318612198 in words is "one billion, three hundred eighteen million, six hundred twelve thousand, one hundred ninety-eight".