1081198080 has 240 divisors, whose sum is σ = 3780320544. Its totient is φ = 285573120.

The previous prime is 1081198051. The next prime is 1081198103. The reversal of 1081198080 is 808911801.

It is a tau number, because it is divible by the number of its divisors (240).

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3847540 + ... + 3847820.

Almost surely, 2^1081198080 is an apocalyptic number.

1081198080 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 1081198080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1890160272).

1081198080 is an abundant number, since it is smaller than the sum of its proper divisors (2699122464).

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

1081198080 is a wasteful number, since it uses less digits than its factorization.

1081198080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 477 (or 458 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 36.

The square root of 1081198080 is about 32881.5766045365. The cubic root of 1081198080 is about 1026.3648144670.

The spelling of 1081198080 in words is "one billion, eighty-one million, one hundred ninety-eight thousand, eighty".