1678604371 has 2 divisors, whose sum is σ = 1678604372. Its totient is φ = 1678604370.

The previous prime is 1678604353. The next prime is 1678604387. The reversal of 1678604371 is 1734068761.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1678604371 - 2⁷ = 1678604243 is a prime.

It is not a weakly prime, because it can be changed into another prime (1678604471) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 839302185 + 839302186.

It is an arithmetic number, because the mean of its divisors is an integer number (839302186).

Almost surely, 2^1678604371 is an apocalyptic number.

1678604371 is a deficient number, since it is larger than the sum of its proper divisors (1).

1678604371 is an equidigital number, since it uses as much as digits as its factorization.

1678604371 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 169344, while the sum is 43.

The square root of 1678604371 is about 40970.7745960459. The cubic root of 1678604371 is about 1188.4551124564.

The spelling of 1678604371 in words is "one billion, six hundred seventy-eight million, six hundred four thousand, three hundred seventy-one".