38642453 has 2 divisors, whose sum is σ = 38642454. Its totient is φ = 38642452.

The previous prime is 38642449. The next prime is 38642473. The reversal of 38642453 is 35424683.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 37185604 + 1456849 = 6098^2 + 1207^2 .

It is a cyclic number.

It is not a de Polignac number, because 38642453 - 2² = 38642449 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (38642473) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19321226 + 19321227.

It is an arithmetic number, because the mean of its divisors is an integer number (19321227).

Almost surely, 2^38642453 is an apocalyptic number.

It is an amenable number.

38642453 is a deficient number, since it is larger than the sum of its proper divisors (1).

38642453 is an equidigital number, since it uses as much as digits as its factorization.

38642453 is an evil number, because the sum of its binary digits is even.

The product of its digits is 69120, while the sum is 35.

The square root of 38642453 is about 6216.3054139899. The cubic root of 38642453 is about 338.0816213372.

The spelling of 38642453 in words is "thirty-eight million, six hundred forty-two thousand, four hundred fifty-three".