38411861 has 2 divisors, whose sum is σ = 38411862. Its totient is φ = 38411860.

The previous prime is 38411851. The next prime is 38411881. The reversal of 38411861 is 16811483.

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., 38365636 + 46225 = 6194^2 + 215^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-38411861 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (38411851) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19205930 + 19205931.

It is an arithmetic number, because the mean of its divisors is an integer number (19205931).

Almost surely, 2^38411861 is an apocalyptic number.

It is an amenable number.

38411861 is a deficient number, since it is larger than the sum of its proper divisors (1).

38411861 is an equidigital number, since it uses as much as digits as its factorization.

38411861 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4608, while the sum is 32.

The square root of 38411861 is about 6197.7303103636. The cubic root of 38411861 is about 337.4077984992.

The spelling of 38411861 in words is "thirty-eight million, four hundred eleven thousand, eight hundred sixty-one".