1081534478 has 4 divisors (see below), whose sum is σ = 1622301720. Its totient is φ = 540767238.

The previous prime is 1081534477. The next prime is 1081534499. The reversal of 1081534478 is 8744351801.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 8744351801 = 49211 ⋅177691.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1081534477) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 270383618 + ... + 270383621.

It is an arithmetic number, because the mean of its divisors is an integer number (405575430).

Almost surely, 2^1081534478 is an apocalyptic number.

1081534478 is a deficient number, since it is larger than the sum of its proper divisors (540767242).

1081534478 is an equidigital number, since it uses as much as digits as its factorization.

1081534478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 540767241.

The product of its (nonzero) digits is 107520, while the sum is 41.

The square root of 1081534478 is about 32886.6915027949. The cubic root of 1081534478 is about 1026.4712492561.

The spelling of 1081534478 in words is "one billion, eighty-one million, five hundred thirty-four thousand, four hundred seventy-eight".