1678124641 has 2 divisors, whose sum is σ = 1678124642. Its totient is φ = 1678124640.

The previous prime is 1678124633. The next prime is 1678124647. The reversal of 1678124641 is 1464218761.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1390991616 + 287133025 = 37296^2 + 16945^2 .

It is a cyclic number.

It is not a de Polignac number, because 1678124641 - 2³ = 1678124633 is a prime.

It is a super-2 number, since 2×1678124641² = 5632204621462757762, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1678124594 and 1678124603.

It is not a weakly prime, because it can be changed into another prime (1678124647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 839062320 + 839062321.

It is an arithmetic number, because the mean of its divisors is an integer number (839062321).

Almost surely, 2^1678124641 is an apocalyptic number.

It is an amenable number.

1678124641 is a deficient number, since it is larger than the sum of its proper divisors (1).

1678124641 is an equidigital number, since it uses as much as digits as its factorization.

1678124641 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 64512, while the sum is 40.

The square root of 1678124641 is about 40964.9196386372. The cubic root of 1678124641 is about 1188.3418850827.

The spelling of 1678124641 in words is "one billion, six hundred seventy-eight million, one hundred twenty-four thousand, six hundred forty-one".