1095421680 has 120 divisors (see below), whose sum is σ = 3698321328. Its totient is φ = 290562048.

The previous prime is 1095421651. The next prime is 1095421693. The reversal of 1095421680 is 861245901.

1095421680 is a `hidden beast` number, since 109 + 542 + 1 + 6 + 8 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (120).

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, 135019 + ... + 142901.

Almost surely, 2^1095421680 is an apocalyptic number.

1095421680 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 1095421680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1849160664).

1095421680 is an abundant number, since it is smaller than the sum of its proper divisors (2602899648).

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

1095421680 is a wasteful number, since it uses less digits than its factorization.

1095421680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8095 (or 8086 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 36.

The square root of 1095421680 is about 33097.1551647570. The cubic root of 1095421680 is about 1030.8459697710.

The spelling of 1095421680 in words is "one billion, ninety-five million, four hundred twenty-one thousand, six hundred eighty".