1081654560 has 240 divisors, whose sum is σ = 4363039296. Its totient is φ = 247214592.

The previous prime is 1081654543. The next prime is 1081654571. The reversal of 1081654560 is 654561801.

1081654560 is a `hidden beast` number, since 10 + 81 + 6 + 5 + 4 + 560 = 666.

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 an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 84759 + ... + 96681.

Almost surely, 2^1081654560 is an apocalyptic number.

1081654560 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 1081654560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2181519648).

1081654560 is an abundant number, since it is smaller than the sum of its proper divisors (3281384736).

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

1081654560 is a wasteful number, since it uses less digits than its factorization.

1081654560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11957 (or 11940 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 36.

The square root of 1081654560 is about 32888.5171450462. The cubic root of 1081654560 is about 1026.5092373066.

The spelling of 1081654560 in words is "one billion, eighty-one million, six hundred fifty-four thousand, five hundred sixty".