19433870836 has 6 divisors (see below), whose sum is σ = 34009273970. Its totient is φ = 9716935416.

The previous prime is 19433870831. The next prime is 19433870903. The reversal of 19433870836 is 63807833491.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 15965838736 + 3468032100 = 126356^2 + 58890^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19433870831) 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 as a sum of consecutive naturals, namely, 2429233851 + ... + 2429233858.

Almost surely, 2^19433870836 is an apocalyptic number.

It is an amenable number.

19433870836 is a deficient number, since it is larger than the sum of its proper divisors (14575403134).

19433870836 is a wasteful number, since it uses less digits than its factorization.

19433870836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4858467713 (or 4858467711 counting only the distinct ones).

The product of its (nonzero) digits is 2612736, while the sum is 52.

The spelling of 19433870836 in words is "nineteen billion, four hundred thirty-three million, eight hundred seventy thousand, eight hundred thirty-six".