38278973 has 2 divisors, whose sum is σ = 38278974. Its totient is φ = 38278972.

The previous prime is 38278963. The next prime is 38278991. The reversal of 38278973 is 37987283.

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., 38278969 + 4 = 6187^2 + 2^2 .

It is a cyclic number.

It is not a de Polignac number, because 38278973 - 2⁸ = 38278717 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (38278913) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19139486 + 19139487.

It is an arithmetic number, because the mean of its divisors is an integer number (19139487).

Almost surely, 2^38278973 is an apocalyptic number.

It is an amenable number.

38278973 is a deficient number, since it is larger than the sum of its proper divisors (1).

38278973 is an equidigital number, since it uses as much as digits as its factorization.

38278973 is an evil number, because the sum of its binary digits is even.

The product of its digits is 508032, while the sum is 47.

The square root of 38278973 is about 6187.0003232584. Note that the first 3 decimals coincide. The cubic root of 38278973 is about 337.0182551667.

The spelling of 38278973 in words is "thirty-eight million, two hundred seventy-eight thousand, nine hundred seventy-three".