38678390407 has 2 divisors, whose sum is σ = 38678390408. Its totient is φ = 38678390406.

The previous prime is 38678390389. The next prime is 38678390449. The reversal of 38678390407 is 70409387683.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 38678390407 - 2³¹ = 36530906759 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (38678390467) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19339195203 + 19339195204.

It is an arithmetic number, because the mean of its divisors is an integer number (19339195204).

Almost surely, 2^38678390407 is an apocalyptic number.

38678390407 is a deficient number, since it is larger than the sum of its proper divisors (1).

38678390407 is an equidigital number, since it uses as much as digits as its factorization.

38678390407 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6096384, while the sum is 55.

The spelling of 38678390407 in words is "thirty-eight billion, six hundred seventy-eight million, three hundred ninety thousand, four hundred seven".