38398571798 has 4 divisors (see below), whose sum is σ = 57597857700. Its totient is φ = 19199285898.

The previous prime is 38398571791. The next prime is 38398571833. The reversal of 38398571798 is 89717589383.

It is a happy number.

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

It is a super-2 number, since 2×38398571798² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38398571791) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9599642948 + ... + 9599642951.

It is an arithmetic number, because the mean of its divisors is an integer number (14399464425).

Almost surely, 2^38398571798 is an apocalyptic number.

38398571798 is a deficient number, since it is larger than the sum of its proper divisors (19199285902).

38398571798 is a wasteful number, since it uses less digits than its factorization.

38398571798 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19199285901.

The product of its digits is 91445760, while the sum is 68.

The spelling of 38398571798 in words is "thirty-eight billion, three hundred ninety-eight million, five hundred seventy-one thousand, seven hundred ninety-eight".