38398969738 has 8 divisors (see below), whose sum is σ = 57603302820. Its totient is φ = 19197868800.

The previous prime is 38398969643. The next prime is 38398969751. The reversal of 38398969738 is 83796989383.

It can be written as a sum of positive squares in 2 ways, for example, as 38387389329 + 11580409 = 195927^2 + 3403^2 .

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

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, 778113 + ... + 825988.

Almost surely, 2^38398969738 is an apocalyptic number.

38398969738 is a deficient number, since it is larger than the sum of its proper divisors (19204333082).

38398969738 is a wasteful number, since it uses less digits than its factorization.

38398969738 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1616072.

The product of its digits is 423263232, while the sum is 73.

The spelling of 38398969738 in words is "thirty-eight billion, three hundred ninety-eight million, nine hundred sixty-nine thousand, seven hundred thirty-eight".