38181434 has 8 divisors (see below), whose sum is σ = 57839508. Its totient is φ = 18901600.

The previous prime is 38181433. The next prime is 38181443. The reversal of 38181434 is 43418183.

It can be written as a sum of positive squares in 2 ways, for example, as 31956409 + 6225025 = 5653^2 + 2495^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an alternating number because its digits alternate between odd and even.

It is a self number, because there is not a number n which added to its sum of digits gives 38181434.

It is not an unprimeable number, because it can be changed into a prime (38181433) 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, 94307 + ... + 94710.

Almost surely, 2^38181434 is an apocalyptic number.

38181434 is a deficient number, since it is larger than the sum of its proper divisors (19658074).

38181434 is a wasteful number, since it uses less digits than its factorization.

38181434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 189120.

The product of its digits is 9216, while the sum is 32.

The square root of 38181434 is about 6179.1127194768. The cubic root of 38181434 is about 336.7317585913.

The spelling of 38181434 in words is "thirty-eight million, one hundred eighty-one thousand, four hundred thirty-four".