38634121 has 2 divisors, whose sum is σ = 38634122. Its totient is φ = 38634120.

The previous prime is 38634103. The next prime is 38634133. The reversal of 38634121 is 12143683.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 38576521 + 57600 = 6211^2 + 240^2 .

It is a cyclic number.

It is not a de Polignac number, because 38634121 - 2²³ = 30245513 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 38634121.

It is not a weakly prime, because it can be changed into another prime (38634151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19317060 + 19317061.

It is an arithmetic number, because the mean of its divisors is an integer number (19317061).

Almost surely, 2^38634121 is an apocalyptic number.

It is an amenable number.

38634121 is a deficient number, since it is larger than the sum of its proper divisors (1).

38634121 is an equidigital number, since it uses as much as digits as its factorization.

38634121 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3456, while the sum is 28.

The square root of 38634121 is about 6215.6352048684. The cubic root of 38634121 is about 338.0573207875.

The spelling of 38634121 in words is "thirty-eight million, six hundred thirty-four thousand, one hundred twenty-one".