1083453581 has 4 divisors (see below), whose sum is σ = 1238232672. Its totient is φ = 928674492.

The previous prime is 1083453559. The next prime is 1083453589. The reversal of 1083453581 is 1853543801.

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, and also an emirpimes, since its reverse is a distinct semiprime: 1853543801 = 109 ⋅17004989.

It is a cyclic number.

It is not a de Polignac number, because 1083453581 - 2¹⁸ = 1083191437 is a prime.

It is a super-2 number, since 2×1083453581² = 2347743324363447122, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1083453589) 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, 77389535 + ... + 77389548.

It is an arithmetic number, because the mean of its divisors is an integer number (309558168).

Almost surely, 2^1083453581 is an apocalyptic number.

It is an amenable number.

1083453581 is a deficient number, since it is larger than the sum of its proper divisors (154779091).

1083453581 is an equidigital number, since it uses as much as digits as its factorization.

1083453581 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154779090.

The product of its (nonzero) digits is 57600, while the sum is 38.

The square root of 1083453581 is about 32915.8560727197. The cubic root of 1083453581 is about 1027.0780229625.

The spelling of 1083453581 in words is "one billion, eighty-three million, four hundred fifty-three thousand, five hundred eighty-one".