1081893453 has 4 divisors (see below), whose sum is σ = 1442524608. Its totient is φ = 721262300.

The previous prime is 1081893433. The next prime is 1081893467. The reversal of 1081893453 is 3543981801.

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 1081893453 - 2⁹ = 1081892941 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1081893403) 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 in 3 ways as a sum of consecutive naturals, for example, 180315573 + ... + 180315578.

It is an arithmetic number, because the mean of its divisors is an integer number (360631152).

Almost surely, 2^1081893453 is an apocalyptic number.

It is an amenable number.

1081893453 is a deficient number, since it is larger than the sum of its proper divisors (360631155).

1081893453 is an equidigital number, since it uses as much as digits as its factorization.

1081893453 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 360631154.

The product of its (nonzero) digits is 103680, while the sum is 42.

The square root of 1081893453 is about 32892.1488048440. The cubic root of 1081893453 is about 1026.5848029659.

The spelling of 1081893453 in words is "one billion, eighty-one million, eight hundred ninety-three thousand, four hundred fifty-three".