38157487 has 2 divisors, whose sum is σ = 38157488. Its totient is φ = 38157486.

The previous prime is 38157481. The next prime is 38157563. The reversal of 38157487 is 78475183.

It is a weak prime.

It is an emirp because it is prime and its reverse (78475183) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 38157487 - 2¹⁵ = 38124719 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (38157481) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19078743 + 19078744.

It is an arithmetic number, because the mean of its divisors is an integer number (19078744).

Almost surely, 2^38157487 is an apocalyptic number.

38157487 is a deficient number, since it is larger than the sum of its proper divisors (1).

38157487 is an equidigital number, since it uses as much as digits as its factorization.

38157487 is an evil number, because the sum of its binary digits is even.

The product of its digits is 188160, while the sum is 43.

The square root of 38157487 is about 6177.1746777957. The cubic root of 38157487 is about 336.6613456445.

The spelling of 38157487 in words is "thirty-eight million, one hundred fifty-seven thousand, four hundred eighty-seven".