38218538 has 8 divisors (see below), whose sum is σ = 60345120. Its totient is φ = 18103500.

The previous prime is 38218517. The next prime is 38218559. The reversal of 38218538 is 83581283.

It is an interprime number because it is at equal distance from previous prime (38218517) and next prime (38218559).

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

It is a Harshad number since it is a multiple of its sum of digits (38), and also a Moran number because the ratio is a prime number: 1005751 = 38218538 / (3 + 8 + 2 + 1 + 8 + 5 + 3 + 8).

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, 502838 + ... + 502913.

It is an arithmetic number, because the mean of its divisors is an integer number (7543140).

Almost surely, 2^38218538 is an apocalyptic number.

38218538 is a gapful number since it is divisible by the number (38) formed by its first and last digit.

38218538 is a deficient number, since it is larger than the sum of its proper divisors (22126582).

38218538 is a wasteful number, since it uses less digits than its factorization.

38218538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1005772.

The product of its digits is 46080, while the sum is 38.

The square root of 38218538 is about 6182.1143632256. The cubic root of 38218538 is about 336.8407998091.

The spelling of 38218538 in words is "thirty-eight million, two hundred eighteen thousand, five hundred thirty-eight".