1081587418 has 8 divisors (see below), whose sum is σ = 1644605748. Its totient is φ = 533385504.

The previous prime is 1081587383. The next prime is 1081587431. The reversal of 1081587418 is 8147851801.

It can be written as a sum of positive squares in 2 ways, for example, as 1021633369 + 59954049 = 31963^2 + 7743^2 .

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3703921 + ... + 3704212.

Almost surely, 2^1081587418 is an apocalyptic number.

1081587418 is a deficient number, since it is larger than the sum of its proper divisors (563018330).

1081587418 is an equidigital number, since it uses as much as digits as its factorization.

1081587418 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7408208.

The product of its (nonzero) digits is 71680, while the sum is 43.

The square root of 1081587418 is about 32887.4963778029. The cubic root of 1081587418 is about 1026.4879972201.

The spelling of 1081587418 in words is "one billion, eighty-one million, five hundred eighty-seven thousand, four hundred eighteen".