1081427679 has 20 divisors (see below), whose sum is σ = 1616482560. Its totient is φ = 720498240.

The previous prime is 1081427651. The next prime is 1081427689. The reversal of 1081427679 is 9767241801.

It is a happy number.

It is not a de Polignac number, because 1081427679 - 2¹⁵ = 1081394911 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1081427689) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 169314 + ... + 175584.

It is an arithmetic number, because the mean of its divisors is an integer number (80824128).

Almost surely, 2^1081427679 is an apocalyptic number.

1081427679 is a deficient number, since it is larger than the sum of its proper divisors (535054881).

1081427679 is an equidigital number, since it uses as much as digits as its factorization.

1081427679 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8412 (or 8403 counting only the distinct ones).

The product of its (nonzero) digits is 169344, while the sum is 45.

The square root of 1081427679 is about 32885.0677207756. The cubic root of 1081427679 is about 1026.4374609323.

The spelling of 1081427679 in words is "one billion, eighty-one million, four hundred twenty-seven thousand, six hundred seventy-nine".