19290243668 has 24 divisors (see below), whose sum is σ = 34611166464. Its totient is φ = 9401745600.

The previous prime is 19290243653. The next prime is 19290243691. The reversal of 19290243668 is 86634209291.

It is a super-2 number, since 2×19290243668² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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, 141821 + ... + 242267.

It is an arithmetic number, because the mean of its divisors is an integer number (1442131936).

Almost surely, 2^19290243668 is an apocalyptic number.

It is an amenable number.

19290243668 is a deficient number, since it is larger than the sum of its proper divisors (15320922796).

19290243668 is a wasteful number, since it uses less digits than its factorization.

19290243668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101663 (or 101661 counting only the distinct ones).

The product of its (nonzero) digits is 1119744, while the sum is 50.

The spelling of 19290243668 in words is "nineteen billion, two hundred ninety million, two hundred forty-three thousand, six hundred sixty-eight".