19676401 has 2 divisors, whose sum is σ = 19676402. Its totient is φ = 19676400.

The previous prime is 19676317. The next prime is 19676407. The reversal of 19676401 is 10467691.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10556001 + 9120400 = 3249^2 + 3020^2 .

It is a cyclic number.

It is not a de Polignac number, because 19676401 - 2⁷ = 19676273 is a prime.

It is not a weakly prime, because it can be changed into another prime (19676407) 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, 9838200 + 9838201.

It is an arithmetic number, because the mean of its divisors is an integer number (9838201).

Almost surely, 2^19676401 is an apocalyptic number.

It is an amenable number.

19676401 is a deficient number, since it is larger than the sum of its proper divisors (1).

19676401 is an equidigital number, since it uses as much as digits as its factorization.

19676401 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9072, while the sum is 34.

The square root of 19676401 is about 4435.8089453898. The cubic root of 19676401 is about 269.9698228733.

The spelling of 19676401 in words is "nineteen million, six hundred seventy-six thousand, four hundred one".