1081881301 has 4 divisors (see below), whose sum is σ = 1081948204. Its totient is φ = 1081814400.

The previous prime is 1081881293. The next prime is 1081881313. The reversal of 1081881301 is 1031881801.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 1031881801 = 1999 ⋅516199.

It can be written as a sum of positive squares in 2 ways, for example, as 235653201 + 846228100 = 15351^2 + 29090^2 .

It is a cyclic number.

It is not a de Polignac number, because 1081881301 - 2³ = 1081881293 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1081881901) 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, 7591 + ... + 47131.

It is an arithmetic number, because the mean of its divisors is an integer number (270487051).

Almost surely, 2^1081881301 is an apocalyptic number.

It is an amenable number.

1081881301 is a deficient number, since it is larger than the sum of its proper divisors (66903).

1081881301 is an equidigital number, since it uses as much as digits as its factorization.

1081881301 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66902.

The product of its (nonzero) digits is 1536, while the sum is 31.

The square root of 1081881301 is about 32891.9640793918. The cubic root of 1081881301 is about 1026.5809593634.

The spelling of 1081881301 in words is "one billion, eighty-one million, eight hundred eighty-one thousand, three hundred one".