38152809 has 32 divisors (see below), whose sum is σ = 58647680. Its totient is φ = 24494400.

The previous prime is 38152789. The next prime is 38152841. The reversal of 38152809 is 90825183.

It is not a de Polignac number, because 38152809 - 2⁸ = 38152553 is a prime.

It is a super-3 number, since 3×38152809³ (a number of 24 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (38152889) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 180714 + ... + 180924.

It is an arithmetic number, because the mean of its divisors is an integer number (1832740).

Almost surely, 2^38152809 is an apocalyptic number.

It is an amenable number.

38152809 is a deficient number, since it is larger than the sum of its proper divisors (20494871).

38152809 is a wasteful number, since it uses less digits than its factorization.

38152809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 438 (or 432 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 36.

The square root of 38152809 is about 6176.7960141161. The cubic root of 38152809 is about 336.6475871726.

The spelling of 38152809 in words is "thirty-eight million, one hundred fifty-two thousand, eight hundred nine".