38156641 has 2 divisors, whose sum is σ = 38156642. Its totient is φ = 38156640.

The previous prime is 38156639. The next prime is 38156647. The reversal of 38156641 is 14665183.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 36857041 + 1299600 = 6071^2 + 1140^2 .

It is a cyclic number.

It is not a de Polignac number, because 38156641 - 2¹ = 38156639 is a prime.

Together with 38156639, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 38156597 and 38156606.

It is not a weakly prime, because it can be changed into another prime (38156647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19078320 + 19078321.

It is an arithmetic number, because the mean of its divisors is an integer number (19078321).

Almost surely, 2^38156641 is an apocalyptic number.

It is an amenable number.

38156641 is a deficient number, since it is larger than the sum of its proper divisors (1).

38156641 is an equidigital number, since it uses as much as digits as its factorization.

38156641 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 17280, while the sum is 34.

The square root of 38156641 is about 6177.1061995080. The cubic root of 38156641 is about 336.6588575561.

The spelling of 38156641 in words is "thirty-eight million, one hundred fifty-six thousand, six hundred forty-one".