1085198400 has 1008 divisors, whose sum is σ = 4952683008. Its totient is φ = 221184000.

The previous prime is 1085198377. The next prime is 1085198453. The reversal of 1085198400 is 48915801.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 35006385 + ... + 35006415.

It is an arithmetic number, because the mean of its divisors is an integer number (4913376).

Almost surely, 2^1085198400 is an apocalyptic number.

1085198400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1085198400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2476341504).

1085198400 is an abundant number, since it is smaller than the sum of its proper divisors (3867484608).

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

1085198400 is a wasteful number, since it uses less digits than its factorization.

1085198400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100 (or 82 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 36.

The square root of 1085198400 is about 32942.3496429748. The cubic root of 1085198400 is about 1027.6290707556.

The spelling of 1085198400 in words is "one billion, eighty-five million, one hundred ninety-eight thousand, four hundred".