1081285287 has 8 divisors (see below), whose sum is σ = 1456577136. Its totient is φ = 713425152.

The previous prime is 1081285279. The next prime is 1081285319. The reversal of 1081285287 is 7825821801.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1081285287 - 2³ = 1081285279 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1081285237) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1857588 + ... + 1858169.

It is an arithmetic number, because the mean of its divisors is an integer number (182072142).

Almost surely, 2^1081285287 is an apocalyptic number.

1081285287 is a deficient number, since it is larger than the sum of its proper divisors (375291849).

1081285287 is an equidigital number, since it uses as much as digits as its factorization.

1081285287 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3715857.

The product of its (nonzero) digits is 71680, while the sum is 42.

The square root of 1081285287 is about 32882.9026547232. The cubic root of 1081285287 is about 1026.3924084826.

The spelling of 1081285287 in words is "one billion, eighty-one million, two hundred eighty-five thousand, two hundred eighty-seven".