1081645110 has 384 divisors, whose sum is σ = 3815078400. Its totient is φ = 215550720.

The previous prime is 1081645109. The next prime is 1081645141. The reversal of 1081645110 is 115461801.

1081645110 is a `hidden beast` number, since 1 + 0 + 8 + 1 + 645 + 1 + 10 = 666.

It is a super-2 number, since 2×1081645110² = 2339912287973824200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 3267645 + ... + 3267975.

It is an arithmetic number, because the mean of its divisors is an integer number (9935100).

Almost surely, 2^1081645110 is an apocalyptic number.

1081645110 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1081645110, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1907539200).

1081645110 is an abundant number, since it is smaller than the sum of its proper divisors (2733433290).

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

1081645110 is a wasteful number, since it uses less digits than its factorization.

1081645110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 393 (or 380 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 27.

The square root of 1081645110 is about 32888.3734775680. The cubic root of 1081645110 is about 1026.5062478924.

The spelling of 1081645110 in words is "one billion, eighty-one million, six hundred forty-five thousand, one hundred ten".