1918198248 has 16 divisors (see below), whose sum is σ = 4795495680. Its totient is φ = 639399408.

The previous prime is 1918198237. The next prime is 1918198283. The reversal of 1918198248 is 8428918191.

It is a self number, because there is not a number n which added to its sum of digits gives 1918198248.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39962440 + ... + 39962487.

It is an arithmetic number, because the mean of its divisors is an integer number (299718480).

Almost surely, 2^1918198248 is an apocalyptic number.

It is an amenable number.

1918198248 is an abundant number, since it is smaller than the sum of its proper divisors (2877297432).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1918198248 is a wasteful number, since it uses less digits than its factorization.

1918198248 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79924936 (or 79924932 counting only the distinct ones).

The product of its digits is 331776, while the sum is 51.

The square root of 1918198248 is about 43797.2401870255. The cubic root of 1918198248 is about 1242.5040985956.

The spelling of 1918198248 in words is "one billion, nine hundred eighteen million, one hundred ninety-eight thousand, two hundred forty-eight".