1198895904 has 192 divisors, whose sum is σ = 3643476480. Its totient is φ = 387991296.

The previous prime is 1198895851. The next prime is 1198895911. The reversal of 1198895904 is 4095988911.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2589177 + ... + 2589639.

It is an arithmetic number, because the mean of its divisors is an integer number (18976440).

Almost surely, 2^1198895904 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1198895904, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1821738240).

1198895904 is an abundant number, since it is smaller than the sum of its proper divisors (2444580576).

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

1198895904 is an frugal number, since it uses more digits than its factorization.

1198895904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 531 (or 505 counting only the distinct ones).

The product of its (nonzero) digits is 933120, while the sum is 54.

The square root of 1198895904 is about 34625.0762309630. The cubic root of 1198895904 is about 1062.3325588782.

The spelling of 1198895904 in words is "one billion, one hundred ninety-eight million, eight hundred ninety-five thousand, nine hundred four".