38581973 has 4 divisors (see below), whose sum is σ = 38631180. Its totient is φ = 38532768.

The previous prime is 38581957. The next prime is 38581979. The reversal of 38581973 is 37918583.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 32341969 + 6240004 = 5687^2 + 2498^2 .

It is a cyclic number.

It is not a de Polignac number, because 38581973 - 2⁴ = 38581957 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38581979) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23408 + ... + 25001.

It is an arithmetic number, because the mean of its divisors is an integer number (9657795).

Almost surely, 2^38581973 is an apocalyptic number.

It is an amenable number.

38581973 is a deficient number, since it is larger than the sum of its proper divisors (49207).

38581973 is an equidigital number, since it uses as much as digits as its factorization.

38581973 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49206.

The product of its digits is 181440, while the sum is 44.

The square root of 38581973 is about 6211.4388832218. The cubic root of 38581973 is about 337.9051500250.

The spelling of 38581973 in words is "thirty-eight million, five hundred eighty-one thousand, nine hundred seventy-three".