4189778249405 has 16 divisors (see below), whose sum is σ = 5782580215680. Its totient is φ = 2854691491392.

The previous prime is 4189778249369. The next prime is 4189778249443. The reversal of 4189778249405 is 5049428779814.

It is a cyclic number.

It is not a de Polignac number, because 4189778249405 - 2¹⁶ = 4189778183869 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, 381230015 + ... + 381241004.

It is an arithmetic number, because the mean of its divisors is an integer number (361411263480).

Almost surely, 2^{4189778249405} is an apocalyptic number.

It is an amenable number.

4189778249405 is a deficient number, since it is larger than the sum of its proper divisors (1592801966275).

4189778249405 is a wasteful number, since it uses less digits than its factorization.

4189778249405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 762471188.

The product of its (nonzero) digits is 162570240, while the sum is 68.

The spelling of 4189778249405 in words is "four trillion, one hundred eighty-nine billion, seven hundred seventy-eight million, two hundred forty-nine thousand, four hundred five".