38660845 has 4 divisors (see below), whose sum is σ = 46393020. Its totient is φ = 30928672.

The previous prime is 38660833. The next prime is 38660863. The reversal of 38660845 is 54806683.

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 7502121 + 31158724 = 2739^2 + 5582^2 .

It is a cyclic number.

It is not a de Polignac number, because 38660845 - 2⁷ = 38660717 is a prime.

It is a super-2 number, since 2×38660845² = 2989321872228050, which contains 22 as substring.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 38660798 and 38660807.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3866080 + ... + 3866089.

It is an arithmetic number, because the mean of its divisors is an integer number (11598255).

Almost surely, 2^38660845 is an apocalyptic number.

It is an amenable number.

38660845 is a deficient number, since it is larger than the sum of its proper divisors (7732175).

38660845 is an equidigital number, since it uses as much as digits as its factorization.

38660845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7732174.

The product of its (nonzero) digits is 138240, while the sum is 40.

The square root of 38660845 is about 6217.7845733026. The cubic root of 38660845 is about 338.1352498422.

The spelling of 38660845 in words is "thirty-eight million, six hundred sixty thousand, eight hundred forty-five".