15194713409 has 2 divisors, whose sum is σ = 15194713410. Its totient is φ = 15194713408.

The previous prime is 15194713319. The next prime is 15194713453. The reversal of 15194713409 is 90431749151.

It is a happy number.

15194713409 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an a-pointer prime, because the next prime (15194713453) can be obtained adding 15194713409 to its sum of digits (44).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12657375025 + 2537338384 = 112505^2 + 50372^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-15194713409 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 15194713409.

It is not a weakly prime, because it can be changed into another prime (15194713109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7597356704 + 7597356705.

It is an arithmetic number, because the mean of its divisors is an integer number (7597356705).

Almost surely, 2^15194713409 is an apocalyptic number.

It is an amenable number.

15194713409 is a deficient number, since it is larger than the sum of its proper divisors (1).

15194713409 is an equidigital number, since it uses as much as digits as its factorization.

15194713409 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 136080, while the sum is 44.

The spelling of 15194713409 in words is "fifteen billion, one hundred ninety-four million, seven hundred thirteen thousand, four hundred nine".