19220868485 has 16 divisors (see below), whose sum is σ = 28387744896. Its totient is φ = 12166175808.

The previous prime is 19220868479. The next prime is 19220868517. The reversal of 19220868485 is 58486802291.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-19220868485 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21121379 + ... + 21122288.

It is an arithmetic number, because the mean of its divisors is an integer number (1774234056).

Almost surely, 2^19220868485 is an apocalyptic number.

It is an amenable number.

19220868485 is a deficient number, since it is larger than the sum of its proper divisors (9166876411).

19220868485 is a wasteful number, since it uses less digits than its factorization.

19220868485 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42243692.

The product of its (nonzero) digits is 2211840, while the sum is 53.

The spelling of 19220868485 in words is "nineteen billion, two hundred twenty million, eight hundred sixty-eight thousand, four hundred eighty-five".