38507361887 has 2 divisors, whose sum is σ = 38507361888. Its totient is φ = 38507361886.

The previous prime is 38507361881. The next prime is 38507361913. The reversal of 38507361887 is 78816370583.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 38507361887 - 2⁸ = 38507361631 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (38507361881) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19253680943 + 19253680944.

It is an arithmetic number, because the mean of its divisors is an integer number (19253680944).

Almost surely, 2^38507361887 is an apocalyptic number.

38507361887 is a deficient number, since it is larger than the sum of its proper divisors (1).

38507361887 is an equidigital number, since it uses as much as digits as its factorization.

38507361887 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6773760, while the sum is 56.

The spelling of 38507361887 in words is "thirty-eight billion, five hundred seven million, three hundred sixty-one thousand, eight hundred eighty-seven".