19629392277049 has 3 divisors (see below), whose sum is σ = 19629396707557. Its totient is φ = 19629387846542.

The previous prime is 19629392277029. The next prime is 19629392277067. The reversal of 19629392277049 is 94077229392691.

It is a happy number.

The square root of 19629392277049 is 4430507.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 19629392277049 - 2⁵ = 19629392277017 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (19629392277029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 2215254 + ... + 6645760.

Almost surely, 2^{19629392277049} is an apocalyptic number.

19629392277049 is the 4430507-th square number.

19629392277049 is the 2215254-th centered octagonal number.

It is an amenable number.

19629392277049 is a deficient number, since it is larger than the sum of its proper divisors (4430508).

19629392277049 is an frugal number, since it uses more digits than its factorization.

19629392277049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8861014 (or 4430507 counting only the distinct ones).

The product of its (nonzero) digits is 185177664, while the sum is 70.

The spelling of 19629392277049 in words is "nineteen trillion, six hundred twenty-nine billion, three hundred ninety-two million, two hundred seventy-seven thousand, forty-nine".