1678752001 has 2 divisors, whose sum is σ = 1678752002. Its totient is φ = 1678752000.

The previous prime is 1678751999. The next prime is 1678752017. The reversal of 1678752001 is 1002578761.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1605204225 + 73547776 = 40065^2 + 8576^2 .

It is a cyclic number.

It is not a de Polignac number, because 1678752001 - 2¹ = 1678751999 is a prime.

Together with 1678751999, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1678752041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 839376000 + 839376001.

It is an arithmetic number, because the mean of its divisors is an integer number (839376001).

Almost surely, 2^1678752001 is an apocalyptic number.

It is an amenable number.

1678752001 is a deficient number, since it is larger than the sum of its proper divisors (1).

1678752001 is an equidigital number, since it uses as much as digits as its factorization.

1678752001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 23520, while the sum is 37.

The square root of 1678752001 is about 40972.5762065311. The cubic root of 1678752001 is about 1188.4899522094.

The spelling of 1678752001 in words is "one billion, six hundred seventy-eight million, seven hundred fifty-two thousand, one".