19984051 has 2 divisors, whose sum is σ = 19984052. Its totient is φ = 19984050.

The previous prime is 19984039. The next prime is 19984073. The reversal of 19984051 is 15048991.

It is a weak prime.

It is an emirp because it is prime and its reverse (15048991) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-19984051 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 19984051.

It is not a weakly prime, because it can be changed into another prime (19984001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9992025 + 9992026.

It is an arithmetic number, because the mean of its divisors is an integer number (9992026).

Almost surely, 2^19984051 is an apocalyptic number.

19984051 is a deficient number, since it is larger than the sum of its proper divisors (1).

19984051 is an equidigital number, since it uses as much as digits as its factorization.

19984051 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12960, while the sum is 37.

The square root of 19984051 is about 4470.3524469554. The cubic root of 19984051 is about 271.3695887270.

The spelling of 19984051 in words is "nineteen million, nine hundred eighty-four thousand, fifty-one".