1081421713 has 2 divisors, whose sum is σ = 1081421714. Its totient is φ = 1081421712.

The previous prime is 1081421711. The next prime is 1081421717. The reversal of 1081421713 is 3171241801.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 931897729 + 149523984 = 30527^2 + 12228^2 .

It is a cyclic number.

It is not a de Polignac number, because 1081421713 - 2¹ = 1081421711 is a prime.

It is a super-3 number, since 3×1081421713³ (a number of 28 digits) contains 333 as substring.

Together with 1081421711, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1081421711) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 540710856 + 540710857.

It is an arithmetic number, because the mean of its divisors is an integer number (540710857).

Almost surely, 2^1081421713 is an apocalyptic number.

It is an amenable number.

1081421713 is a deficient number, since it is larger than the sum of its proper divisors (1).

1081421713 is an equidigital number, since it uses as much as digits as its factorization.

1081421713 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1344, while the sum is 28.

The square root of 1081421713 is about 32884.9770107872. The cubic root of 1081421713 is about 1026.4355733851.

The spelling of 1081421713 in words is "one billion, eighty-one million, four hundred twenty-one thousand, seven hundred thirteen".