19137418361 has 2 divisors, whose sum is σ = 19137418362. Its totient is φ = 19137418360.

The previous prime is 19137418337. The next prime is 19137418367. The reversal of 19137418361 is 16381473191.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14144582761 + 4992835600 = 118931^2 + 70660^2 .

It is an emirp because it is prime and its reverse (16381473191) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 19137418361 - 2⁶ = 19137418297 is a prime.

It is not a weakly prime, because it can be changed into another prime (19137418367) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9568709180 + 9568709181.

It is an arithmetic number, because the mean of its divisors is an integer number (9568709181).

Almost surely, 2^19137418361 is an apocalyptic number.

It is an amenable number.

19137418361 is a deficient number, since it is larger than the sum of its proper divisors (1).

19137418361 is an equidigital number, since it uses as much as digits as its factorization.

19137418361 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 108864, while the sum is 44.

The spelling of 19137418361 in words is "nineteen billion, one hundred thirty-seven million, four hundred eighteen thousand, three hundred sixty-one".