19414621 has 2 divisors, whose sum is σ = 19414622. Its totient is φ = 19414620.

The previous prime is 19414583. The next prime is 19414627. The reversal of 19414621 is 12641491.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19316025 + 98596 = 4395^2 + 314^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-19414621 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 19414621.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (19414627) 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, 9707310 + 9707311.

It is an arithmetic number, because the mean of its divisors is an integer number (9707311).

Almost surely, 2^19414621 is an apocalyptic number.

It is an amenable number.

19414621 is a deficient number, since it is larger than the sum of its proper divisors (1).

19414621 is an equidigital number, since it uses as much as digits as its factorization.

19414621 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1728, while the sum is 28.

The square root of 19414621 is about 4406.2025600283. The cubic root of 19414621 is about 268.7672239907.

The spelling of 19414621 in words is "nineteen million, four hundred fourteen thousand, six hundred twenty-one".