1081436816 has 60 divisors (see below), whose sum is σ = 2224201392. Its totient is φ = 509222208.

The previous prime is 1081436791. The next prime is 1081436821. The reversal of 1081436816 is 6186341801.

It is a self number, because there is not a number n which added to its sum of digits gives 1081436816.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 566135 + ... + 568041.

Almost surely, 2^1081436816 is an apocalyptic number.

1081436816 is a gapful number since it is divisible by the number (16) 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 1081436816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1112100696).

1081436816 is an abundant number, since it is smaller than the sum of its proper divisors (1142764576).

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

1081436816 is a wasteful number, since it uses less digits than its factorization.

1081436816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2028 (or 1999 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 38.

The square root of 1081436816 is about 32885.2066437175. The cubic root of 1081436816 is about 1026.4403517197.

The spelling of 1081436816 in words is "one billion, eighty-one million, four hundred thirty-six thousand, eight hundred sixteen".