19397237066 has 8 divisors (see below), whose sum is σ = 30627216480. Its totient is φ = 9188164908.

The previous prime is 19397237053. The next prime is 19397237077. The reversal of 19397237066 is 66073279391.

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

It is a junction number, because it is equal to n+sod(n) for n = 19397236999 and 19397237017.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 255226766 + ... + 255226841.

It is an arithmetic number, because the mean of its divisors is an integer number (3828402060).

Almost surely, 2^19397237066 is an apocalyptic number.

19397237066 is a deficient number, since it is larger than the sum of its proper divisors (11229979414).

19397237066 is a wasteful number, since it uses less digits than its factorization.

19397237066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 510453628.

The product of its (nonzero) digits is 2571912, while the sum is 53.

The spelling of 19397237066 in words is "nineteen billion, three hundred ninety-seven million, two hundred thirty-seven thousand, sixty-six".