19614961 has 2 divisors, whose sum is σ = 19614962. Its totient is φ = 19614960.

The previous prime is 19614949. The next prime is 19614983. The reversal of 19614961 is 16941691.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11458225 + 8156736 = 3385^2 + 2856^2 .

It is a cyclic number.

It is not a de Polignac number, because 19614961 - 2⁹ = 19614449 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 19614961.

It is not a weakly prime, because it can be changed into another prime (19614901) 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, 9807480 + 9807481.

It is an arithmetic number, because the mean of its divisors is an integer number (9807481).

Almost surely, 2^19614961 is an apocalyptic number.

It is an amenable number.

19614961 is a deficient number, since it is larger than the sum of its proper divisors (1).

19614961 is an equidigital number, since it uses as much as digits as its factorization.

19614961 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11664, while the sum is 37.

The square root of 19614961 is about 4428.8780746370. The cubic root of 19614961 is about 269.6885343000.

The spelling of 19614961 in words is "nineteen million, six hundred fourteen thousand, nine hundred sixty-one".