19734133747 has 2 divisors, whose sum is σ = 19734133748. Its totient is φ = 19734133746.

The previous prime is 19734133739. The next prime is 19734133777. The reversal of 19734133747 is 74733143791.

It is a weak prime.

It is an emirp because it is prime and its reverse (74733143791) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 19734133747 - 2³ = 19734133739 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 19734133747.

It is not a weakly prime, because it can be changed into another prime (19734133777) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9867066873 + 9867066874.

It is an arithmetic number, because the mean of its divisors is an integer number (9867066874).

Almost surely, 2^19734133747 is an apocalyptic number.

19734133747 is a deficient number, since it is larger than the sum of its proper divisors (1).

19734133747 is an equidigital number, since it uses as much as digits as its factorization.

19734133747 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1333584, while the sum is 49.

The spelling of 19734133747 in words is "nineteen billion, seven hundred thirty-four million, one hundred thirty-three thousand, seven hundred forty-seven".