4189778249403 has 4 divisors (see below), whose sum is σ = 5586370999208. Its totient is φ = 2793185499600.

The previous prime is 4189778249369. The next prime is 4189778249443. The reversal of 4189778249403 is 3049428779814.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 4189778249403 - 2⁸ = 4189778249147 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4189778249443) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 698296374898 + ... + 698296374903.

It is an arithmetic number, because the mean of its divisors is an integer number (1396592749802).

Almost surely, 2^{4189778249403} is an apocalyptic number.

4189778249403 is a deficient number, since it is larger than the sum of its proper divisors (1396592749805).

4189778249403 is a wasteful number, since it uses less digits than its factorization.

4189778249403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1396592749804.

The product of its (nonzero) digits is 97542144, while the sum is 66.

The spelling of 4189778249403 in words is "four trillion, one hundred eighty-nine billion, seven hundred seventy-eight million, two hundred forty-nine thousand, four hundred three".