19030045997 has 8 divisors (see below), whose sum is σ = 19279895160. Its totient is φ = 18781401600.

The previous prime is 19030045943. The next prime is 19030046003. The reversal of 19030045997 is 79954003091.

It can be written as a sum of positive squares in 4 ways, for example, as 28526281 + 19001519716 = 5341^2 + 137846^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-19030045997 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19030044997) 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 in 7 ways as a sum of consecutive naturals, for example, 269372 + ... + 332597.

It is an arithmetic number, because the mean of its divisors is an integer number (2409986895).

Almost surely, 2^19030045997 is an apocalyptic number.

It is an amenable number.

19030045997 is a deficient number, since it is larger than the sum of its proper divisors (249849163).

19030045997 is a wasteful number, since it uses less digits than its factorization.

19030045997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 602383.

The product of its (nonzero) digits is 306180, while the sum is 47.

The spelling of 19030045997 in words is "nineteen billion, thirty million, forty-five thousand, nine hundred ninety-seven".