1198412345 has 16 divisors (see below), whose sum is σ = 1581672960. Its totient is φ = 866149824.

The previous prime is 1198412321. The next prime is 1198412357. The reversal of 1198412345 is 5432148911.

It is a cyclic number.

It is not a de Polignac number, because 1198412345 - 2³⁰ = 124670521 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1198412299 and 1198412308.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 193085 + ... + 199194.

It is an arithmetic number, because the mean of its divisors is an integer number (98854560).

Almost surely, 2^1198412345 is an apocalyptic number.

It is an amenable number.

1198412345 is a deficient number, since it is larger than the sum of its proper divisors (383260615).

1198412345 is a wasteful number, since it uses less digits than its factorization.

1198412345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 392344.

The product of its digits is 34560, while the sum is 38.

The square root of 1198412345 is about 34618.0927406465. The cubic root of 1198412345 is about 1062.1897136853.

The spelling of 1198412345 in words is "one billion, one hundred ninety-eight million, four hundred twelve thousand, three hundred forty-five".