38077861 has 2 divisors, whose sum is σ = 38077862. Its totient is φ = 38077860.

The previous prime is 38077859. The next prime is 38077867. The reversal of 38077861 is 16877083.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 31922500 + 6155361 = 5650^2 + 2481^2 .

It is an emirp because it is prime and its reverse (16877083) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 38077861 - 2¹ = 38077859 is a prime.

Together with 38077859, 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 (38077867) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19038930 + 19038931.

It is an arithmetic number, because the mean of its divisors is an integer number (19038931).

Almost surely, 2^38077861 is an apocalyptic number.

It is an amenable number.

38077861 is a deficient number, since it is larger than the sum of its proper divisors (1).

38077861 is an equidigital number, since it uses as much as digits as its factorization.

38077861 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 56448, while the sum is 40.

The square root of 38077861 is about 6170.7261323121. The cubic root of 38077861 is about 336.4270040009.

The spelling of 38077861 in words is "thirty-eight million, seventy-seven thousand, eight hundred sixty-one".