38186987 has 2 divisors, whose sum is σ = 38186988. Its totient is φ = 38186986.

The previous prime is 38186933. The next prime is 38186999. The reversal of 38186987 is 78968183.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 38186987 - 2¹⁴ = 38170603 is a prime.

It is a super-2 number, since 2×38186987² = 2916491952276338, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (38186927) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19093493 + 19093494.

It is an arithmetic number, because the mean of its divisors is an integer number (19093494).

Almost surely, 2^38186987 is an apocalyptic number.

38186987 is a deficient number, since it is larger than the sum of its proper divisors (1).

38186987 is an equidigital number, since it uses as much as digits as its factorization.

38186987 is an evil number, because the sum of its binary digits is even.

The product of its digits is 580608, while the sum is 50.

The square root of 38186987 is about 6179.5620394976. The cubic root of 38186987 is about 336.7480822388.

The spelling of 38186987 in words is "thirty-eight million, one hundred eighty-six thousand, nine hundred eighty-seven".