38166965 has 4 divisors (see below), whose sum is σ = 45800364. Its totient is φ = 30533568.

The previous prime is 38166937. The next prime is 38166979. The reversal of 38166965 is 56966183.

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 23367556 + 14799409 = 4834^2 + 3847^2 .

It is a cyclic number.

It is not a de Polignac number, because 38166965 - 2¹⁸ = 37904821 is a prime.

It is a super-2 number, since 2×38166965² = 2913434434622450, which contains 22 as substring.

It is a Duffinian number.

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, 3816692 + ... + 3816701.

It is an arithmetic number, because the mean of its divisors is an integer number (11450091).

Almost surely, 2^38166965 is an apocalyptic number.

It is an amenable number.

38166965 is a deficient number, since it is larger than the sum of its proper divisors (7633399).

38166965 is an equidigital number, since it uses as much as digits as its factorization.

38166965 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7633398.

The product of its digits is 233280, while the sum is 44.

The square root of 38166965 is about 6177.9418093731. The cubic root of 38166965 is about 336.6892179559.

The spelling of 38166965 in words is "thirty-eight million, one hundred sixty-six thousand, nine hundred sixty-five".