38149505 has 4 divisors (see below), whose sum is σ = 45779412. Its totient is φ = 30519600.

The previous prime is 38149493. The next prime is 38149519. The reversal of 38149505 is 50594183.

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 27331984 + 10817521 = 5228^2 + 3289^2 .

It is not a de Polignac number, because 38149505 - 2²⁰ = 37100929 is a prime.

It is a Duffinian 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, 3814946 + ... + 3814955.

It is an arithmetic number, because the mean of its divisors is an integer number (11444853).

Almost surely, 2^38149505 is an apocalyptic number.

It is an amenable number.

38149505 is a deficient number, since it is larger than the sum of its proper divisors (7629907).

38149505 is an equidigital number, since it uses as much as digits as its factorization.

38149505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7629906.

The product of its (nonzero) digits is 21600, while the sum is 35.

The square root of 38149505 is about 6176.5285557504. The cubic root of 38149505 is about 336.6378690962.

The spelling of 38149505 in words is "thirty-eight million, one hundred forty-nine thousand, five hundred five".