38428390018 has 8 divisors (see below), whose sum is σ = 60148784448. Its totient is φ = 18378795204.

The previous prime is 38428390003. The next prime is 38428390031. The reversal of 38428390018 is 81009382483.

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 (46), and also a Moran number because the ratio is a prime number: 835399783 = 38428390018 / (3 + 8 + 4 + 2 + 8 + 3 + 9 + 0 + 0 + 1 + 8).

It is a self number, because there is not a number n which added to its sum of digits gives 38428390018.

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, 417699846 + ... + 417699937.

It is an arithmetic number, because the mean of its divisors is an integer number (7518598056).

Almost surely, 2^38428390018 is an apocalyptic number.

38428390018 is a deficient number, since it is larger than the sum of its proper divisors (21720394430).

38428390018 is a wasteful number, since it uses less digits than its factorization.

38428390018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 835399808.

The product of its (nonzero) digits is 331776, while the sum is 46.

The spelling of 38428390018 in words is "thirty-eight billion, four hundred twenty-eight million, three hundred ninety thousand, eighteen".