5430827981 has 2 divisors, whose sum is σ = 5430827982. Its totient is φ = 5430827980.

The previous prime is 5430827953. The next prime is 5430827989. The reversal of 5430827981 is 1897280345.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3394111081 + 2036716900 = 58259^2 + 45130^2 .

It is a cyclic number.

It is not a de Polignac number, because 5430827981 - 2¹⁸ = 5430565837 is a prime.

It is a super-2 number, since 2×5430827981² = 58987785118425072722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5430827989) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2715413990 + 2715413991.

It is an arithmetic number, because the mean of its divisors is an integer number (2715413991).

Almost surely, 2^5430827981 is an apocalyptic number.

It is an amenable number.

5430827981 is a deficient number, since it is larger than the sum of its proper divisors (1).

5430827981 is an equidigital number, since it uses as much as digits as its factorization.

5430827981 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 483840, while the sum is 47.

The square root of 5430827981 is about 73694.1516064877. The cubic root of 5430827981 is about 1757.7428862354.

The spelling of 5430827981 in words is "five billion, four hundred thirty million, eight hundred twenty-seven thousand, nine hundred eighty-one".