38349218 has 4 divisors (see below), whose sum is σ = 57523830. Its totient is φ = 19174608.

The previous prime is 38349217. The next prime is 38349251. The reversal of 38349218 is 81294383.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 32410249 + 5938969 = 5693^2 + 2437^2 .

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

It is not an unprimeable number, because it can be changed into a prime (38349217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9587303 + ... + 9587306.

Almost surely, 2^38349218 is an apocalyptic number.

38349218 is a deficient number, since it is larger than the sum of its proper divisors (19174612).

38349218 is a wasteful number, since it uses less digits than its factorization.

38349218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19174611.

The product of its digits is 41472, while the sum is 38.

The square root of 38349218 is about 6192.6745433617. The cubic root of 38349218 is about 337.2242810784.

The spelling of 38349218 in words is "thirty-eight million, three hundred forty-nine thousand, two hundred eighteen".