1199190798 has 48 divisors (see below), whose sum is σ = 2872055760. Its totient is φ = 368699472.

The previous prime is 1199190793. The next prime is 1199190799. The reversal of 1199190798 is 8970919911.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1199190793) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 916861 + ... + 918167.

It is an arithmetic number, because the mean of its divisors is an integer number (59834495).

Almost surely, 2^1199190798 is an apocalyptic number.

1199190798 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1199190798, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1436027880).

1199190798 is an abundant number, since it is smaller than the sum of its proper divisors (1672864962).

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

1199190798 is an equidigital number, since it uses as much as digits as its factorization.

1199190798 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2638 (or 1325 counting only the distinct ones).

The product of its (nonzero) digits is 367416, while the sum is 54.

The square root of 1199190798 is about 34629.3343568715. The cubic root of 1199190798 is about 1062.4196528493.

The spelling of 1199190798 in words is "one billion, one hundred ninety-nine million, one hundred ninety thousand, seven hundred ninety-eight".