38418973 has 2 divisors, whose sum is σ = 38418974. Its totient is φ = 38418972.

The previous prime is 38418923. The next prime is 38418977. The reversal of 38418973 is 37981483.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 35976004 + 2442969 = 5998^2 + 1563^2 .

It is a cyclic number.

It is not a de Polignac number, because 38418973 - 2⁹ = 38418461 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (38418977) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19209486 + 19209487.

It is an arithmetic number, because the mean of its divisors is an integer number (19209487).

Almost surely, 2^38418973 is an apocalyptic number.

It is an amenable number.

38418973 is a deficient number, since it is larger than the sum of its proper divisors (1).

38418973 is an equidigital number, since it uses as much as digits as its factorization.

38418973 is an evil number, because the sum of its binary digits is even.

The product of its digits is 145152, while the sum is 43.

The square root of 38418973 is about 6198.3040422361. The cubic root of 38418973 is about 337.4286210274.

The spelling of 38418973 in words is "thirty-eight million, four hundred eighteen thousand, nine hundred seventy-three".