19072849 has 2 divisors, whose sum is σ = 19072850. Its totient is φ = 19072848.

The previous prime is 19072847. The next prime is 19072853. The reversal of 19072849 is 94827091.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14493249 + 4579600 = 3807^2 + 2140^2 .

It is a cyclic number.

It is not a de Polignac number, because 19072849 - 2¹ = 19072847 is a prime.

Together with 19072847, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (19072841) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9536424 + 9536425.

It is an arithmetic number, because the mean of its divisors is an integer number (9536425).

Almost surely, 2^19072849 is an apocalyptic number.

It is an amenable number.

19072849 is a deficient number, since it is larger than the sum of its proper divisors (1).

19072849 is an equidigital number, since it uses as much as digits as its factorization.

19072849 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36288, while the sum is 40.

The square root of 19072849 is about 4367.2473023634. The cubic root of 19072849 is about 267.1807657115.

The spelling of 19072849 in words is "nineteen million, seventy-two thousand, eight hundred forty-nine".