1093278285 has 24 divisors (see below), whose sum is σ = 2067290784. Its totient is φ = 530074080.

The previous prime is 1093278253. The next prime is 1093278299. The reversal of 1093278285 is 5828723901.

It is a happy number.

1093278285 is a `hidden beast` number, since 10 + 93 + 278 + 285 = 666.

It is not a de Polignac number, because 1093278285 - 2⁵ = 1093278253 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 1093278285.

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, 1103827 + ... + 1104816.

It is an arithmetic number, because the mean of its divisors is an integer number (86137116).

Almost surely, 2^1093278285 is an apocalyptic number.

1093278285 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1093278285 is a deficient number, since it is larger than the sum of its proper divisors (974012499).

1093278285 is a wasteful number, since it uses less digits than its factorization.

1093278285 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2208665 (or 2208662 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 45.

The square root of 1093278285 is about 33064.7589587464. The cubic root of 1093278285 is about 1030.1731838745.

It can be divided in two parts, 1093 and 278285, that added together give a triangular number (279378 = T₇₄₇).

The spelling of 1093278285 in words is "one billion, ninety-three million, two hundred seventy-eight thousand, two hundred eighty-five".