19368098738 has 4 divisors (see below), whose sum is σ = 29052148110. Its totient is φ = 9684049368.

The previous prime is 19368098731. The next prime is 19368098747. The reversal of 19368098738 is 83789086391.

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

It can be written as a sum of positive squares in only one way, i.e., 17892540169 + 1475558569 = 133763^2 + 38413^2 .

It is not an unprimeable number, because it can be changed into a prime (19368098731) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4842024683 + ... + 4842024686.

Almost surely, 2^19368098738 is an apocalyptic number.

19368098738 is a deficient number, since it is larger than the sum of its proper divisors (9684049372).

19368098738 is an equidigital number, since it uses as much as digits as its factorization.

19368098738 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9684049371.

The product of its (nonzero) digits is 15676416, while the sum is 62.

The spelling of 19368098738 in words is "nineteen billion, three hundred sixty-eight million, ninety-eight thousand, seven hundred thirty-eight".