19015049 has 2 divisors, whose sum is σ = 19015050. Its totient is φ = 19015048.

The previous prime is 19015037. The next prime is 19015057. The reversal of 19015049 is 94051091.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12924025 + 6091024 = 3595^2 + 2468^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-19015049 is a prime.

It is a plaindrome in base 16.

It is not a weakly prime, because it can be changed into another prime (19015649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9507524 + 9507525.

It is an arithmetic number, because the mean of its divisors is an integer number (9507525).

Almost surely, 2^19015049 is an apocalyptic number.

It is an amenable number.

19015049 is a deficient number, since it is larger than the sum of its proper divisors (1).

19015049 is an equidigital number, since it uses as much as digits as its factorization.

19015049 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1620, while the sum is 29.

The square root of 19015049 is about 4360.6248405475. The cubic root of 19015049 is about 266.9105967651.

The spelling of 19015049 in words is "nineteen million, fifteen thousand, forty-nine".