38237987 has 2 divisors, whose sum is σ = 38237988. Its totient is φ = 38237986.

The previous prime is 38237977. The next prime is 38237989. The reversal of 38237987 is 78973283.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 38237987 - 2⁴ = 38237971 is a prime.

Together with 38237989, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (38237989) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19118993 + 19118994.

It is an arithmetic number, because the mean of its divisors is an integer number (19118994).

Almost surely, 2^38237987 is an apocalyptic number.

38237987 is a deficient number, since it is larger than the sum of its proper divisors (1).

38237987 is an equidigital number, since it uses as much as digits as its factorization.

38237987 is an evil number, because the sum of its binary digits is even.

The product of its digits is 508032, while the sum is 47.

The square root of 38237987 is about 6183.6871686721. The cubic root of 38237987 is about 336.8979283309.

The spelling of 38237987 in words is "thirty-eight million, two hundred thirty-seven thousand, nine hundred eighty-seven".