38670557 has 2 divisors, whose sum is σ = 38670558. Its totient is φ = 38670556.

The previous prime is 38670551. The next prime is 38670559. The reversal of 38670557 is 75507683.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 33339076 + 5331481 = 5774^2 + 2309^2 .

It is an emirp because it is prime and its reverse (75507683) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 38670557 - 2¹⁴ = 38654173 is a prime.

Together with 38670559, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (38670551) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19335278 + 19335279.

It is an arithmetic number, because the mean of its divisors is an integer number (19335279).

Almost surely, 2^38670557 is an apocalyptic number.

It is an amenable number.

38670557 is a deficient number, since it is larger than the sum of its proper divisors (1).

38670557 is an equidigital number, since it uses as much as digits as its factorization.

38670557 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 176400, while the sum is 41.

The square root of 38670557 is about 6218.5655098262. The cubic root of 38670557 is about 338.1635618169.

The spelling of 38670557 in words is "thirty-eight million, six hundred seventy thousand, five hundred fifty-seven".