19303212097 has 8 divisors (see below), whose sum is σ = 21180303144. Its totient is φ = 17482153728.

The previous prime is 19303212079. The next prime is 19303212109. The reversal of 19303212097 is 79021230391.

It is a happy number.

It is a Cunningham number, because it is equal to 138936²+1.

It can be written as a sum of positive squares in 4 ways, for example, as 1 + 19303212096 = 1^2 + 138936^2 .

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

It is a de Polignac number, because none of the positive numbers 2^k-19303212097 is a prime.

It is a super-2 number, since 2×19303212097² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (19303212007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14007448 + ... + 14008825.

It is an arithmetic number, because the mean of its divisors is an integer number (2647537893).

Almost surely, 2^19303212097 is an apocalyptic number.

It is an amenable number.

19303212097 is a deficient number, since it is larger than the sum of its proper divisors (1877091047).

19303212097 is a wasteful number, since it uses less digits than its factorization.

19303212097 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28016339.

The product of its (nonzero) digits is 20412, while the sum is 37.

The spelling of 19303212097 in words is "nineteen billion, three hundred three million, two hundred twelve thousand, ninety-seven".