38784681697 has 4 divisors (see below), whose sum is σ = 38785861296. Its totient is φ = 38783502100.

The previous prime is 38784681647. The next prime is 38784681713. The reversal of 38784681697 is 79618648783.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 38784681697 - 2¹⁹ = 38784157409 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (38784681647) 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 in 3 ways as a sum of consecutive naturals, for example, 539023 + ... + 606724.

It is an arithmetic number, because the mean of its divisors is an integer number (9696465324).

Almost surely, 2^38784681697 is an apocalyptic number.

It is an amenable number.

38784681697 is a deficient number, since it is larger than the sum of its proper divisors (1179599).

38784681697 is a wasteful number, since it uses less digits than its factorization.

38784681697 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1179598.

The product of its digits is 97542144, while the sum is 67.

The spelling of 38784681697 in words is "thirty-eight billion, seven hundred eighty-four million, six hundred eighty-one thousand, six hundred ninety-seven".