1081263693 has 8 divisors (see below), whose sum is σ = 1443654688. Its totient is φ = 719857584.

The previous prime is 1081263679. The next prime is 1081263697. The reversal of 1081263693 is 3963621801.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1081263693 - 2⁵ = 1081263661 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 (1081263697) 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 7 ways as a sum of consecutive naturals, for example, 243655 + ... + 248052.

It is an arithmetic number, because the mean of its divisors is an integer number (180456836).

Almost surely, 2^1081263693 is an apocalyptic number.

It is an amenable number.

1081263693 is a deficient number, since it is larger than the sum of its proper divisors (362390995).

1081263693 is an equidigital number, since it uses as much as digits as its factorization.

1081263693 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 492443.

The product of its (nonzero) digits is 46656, while the sum is 39.

The square root of 1081263693 is about 32882.5743061580. The cubic root of 1081263693 is about 1026.3855758531.

The spelling of 1081263693 in words is "one billion, eighty-one million, two hundred sixty-three thousand, six hundred ninety-three".