1081534481 has 4 divisors (see below), whose sum is σ = 1081660272. Its totient is φ = 1081408692.

The previous prime is 1081534477. The next prime is 1081534499. The reversal of 1081534481 is 1844351801.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1081534481 - 2² = 1081534477 is a prime.

It is a super-2 number, since 2×1081534481² = 2339433667183878722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1081534081) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 48971 + ... + 67536.

It is an arithmetic number, because the mean of its divisors is an integer number (270415068).

Almost surely, 2^1081534481 is an apocalyptic number.

It is an amenable number.

1081534481 is a deficient number, since it is larger than the sum of its proper divisors (125791).

1081534481 is an equidigital number, since it uses as much as digits as its factorization.

1081534481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125790.

The product of its (nonzero) digits is 15360, while the sum is 35.

The square root of 1081534481 is about 32886.6915484060. The cubic root of 1081534481 is about 1026.4712502052.

The spelling of 1081534481 in words is "one billion, eighty-one million, five hundred thirty-four thousand, four hundred eighty-one".