38455818 has 8 divisors (see below), whose sum is σ = 76911648. Its totient is φ = 12818604.

The previous prime is 38455811. The next prime is 38455831. The reversal of 38455818 is 81855483.

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

38455818 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 38455818.

It is not an unprimeable number, because it can be changed into a prime (38455811) 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, 3204646 + ... + 3204657.

It is an arithmetic number, because the mean of its divisors is an integer number (9613956).

Almost surely, 2^38455818 is an apocalyptic number.

38455818 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

38455818 is a wasteful number, since it uses less digits than its factorization.

38455818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6409308.

The product of its digits is 153600, while the sum is 42.

The square root of 38455818 is about 6201.2755139568. The cubic root of 38455818 is about 337.5364547728.

The spelling of 38455818 in words is "thirty-eight million, four hundred fifty-five thousand, eight hundred eighteen".