38642473 has 2 divisors, whose sum is σ = 38642474. Its totient is φ = 38642472.

The previous prime is 38642453. The next prime is 38642501. The reversal of 38642473 is 37424683.

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., 37124649 + 1517824 = 6093^2 + 1232^2 .

It is an emirp because it is prime and its reverse (37424683) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 38642473 - 2⁹ = 38641961 is a prime.

It is not a weakly prime, because it can be changed into another prime (38642453) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19321236 + 19321237.

It is an arithmetic number, because the mean of its divisors is an integer number (19321237).

Almost surely, 2^38642473 is an apocalyptic number.

It is an amenable number.

38642473 is a deficient number, since it is larger than the sum of its proper divisors (1).

38642473 is an equidigital number, since it uses as much as digits as its factorization.

38642473 is an evil number, because the sum of its binary digits is even.

The product of its digits is 96768, while the sum is 37.

The square root of 38642473 is about 6216.3070226622. The cubic root of 38642473 is about 338.0816796637.

The spelling of 38642473 in words is "thirty-eight million, six hundred forty-two thousand, four hundred seventy-three".