19040136149 has 2 divisors, whose sum is σ = 19040136150. Its totient is φ = 19040136148.

The previous prime is 19040136133. The next prime is 19040136197. The reversal of 19040136149 is 94163104091.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9822792100 + 9217344049 = 99110^2 + 96007^2 .

It is a cyclic number.

It is not a de Polignac number, because 19040136149 - 2⁴ = 19040136133 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (19040136449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9520068074 + 9520068075.

It is an arithmetic number, because the mean of its divisors is an integer number (9520068075).

Almost surely, 2^19040136149 is an apocalyptic number.

It is an amenable number.

19040136149 is a deficient number, since it is larger than the sum of its proper divisors (1).

19040136149 is an equidigital number, since it uses as much as digits as its factorization.

19040136149 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 23328, while the sum is 38.

The spelling of 19040136149 in words is "nineteen billion, forty million, one hundred thirty-six thousand, one hundred forty-nine".