1982427893 has 2 divisors, whose sum is σ = 1982427894. Its totient is φ = 1982427892.

The previous prime is 1982427883. The next prime is 1982427911. The reversal of 1982427893 is 3987242891.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1627557649 + 354870244 = 40343^2 + 18838^2 .

It is a cyclic number.

It is not a de Polignac number, because 1982427893 - 2⁸ = 1982427637 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1982427823) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 991213946 + 991213947.

It is an arithmetic number, because the mean of its divisors is an integer number (991213947).

Almost surely, 2^1982427893 is an apocalyptic number.

It is an amenable number.

1982427893 is a deficient number, since it is larger than the sum of its proper divisors (1).

1982427893 is an equidigital number, since it uses as much as digits as its factorization.

1982427893 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1741824, while the sum is 53.

The square root of 1982427893 is about 44524.4639832980. The cubic root of 1982427893 is about 1256.2202789995.

The spelling of 1982427893 in words is "one billion, nine hundred eighty-two million, four hundred twenty-seven thousand, eight hundred ninety-three".