19067734397 has 2 divisors, whose sum is σ = 19067734398. Its totient is φ = 19067734396.

The previous prime is 19067734363. The next prime is 19067734409. The reversal of 19067734397 is 79343776091.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19040964121 + 26770276 = 137989^2 + 5174^2 .

It is a cyclic number.

It is not a de Polignac number, because 19067734397 - 2³² = 14772767101 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (19067734307) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9533867198 + 9533867199.

It is an arithmetic number, because the mean of its divisors is an integer number (9533867199).

Almost surely, 2^19067734397 is an apocalyptic number.

It is an amenable number.

19067734397 is a deficient number, since it is larger than the sum of its proper divisors (1).

19067734397 is an equidigital number, since it uses as much as digits as its factorization.

19067734397 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6001128, while the sum is 56.

The spelling of 19067734397 in words is "nineteen billion, sixty-seven million, seven hundred thirty-four thousand, three hundred ninety-seven".