4921917189 has 8 divisors (see below), whose sum is σ = 7500064320. Its totient is φ = 2812524096.

The previous prime is 4921917173. The next prime is 4921917191. The reversal of 4921917189 is 9817191294.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 4921917189 - 2⁴ = 4921917173 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4921917139) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 117188484 + ... + 117188525.

It is an arithmetic number, because the mean of its divisors is an integer number (937508040).

Almost surely, 2^4921917189 is an apocalyptic number.

It is an amenable number.

4921917189 is a deficient number, since it is larger than the sum of its proper divisors (2578147131).

4921917189 is a wasteful number, since it uses less digits than its factorization.

4921917189 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 234377019.

The product of its digits is 326592, while the sum is 51.

The square root of 4921917189 is about 70156.3766809547. The cubic root of 4921917189 is about 1701.0278892131.

The spelling of 4921917189 in words is "four billion, nine hundred twenty-one million, nine hundred seventeen thousand, one hundred eighty-nine".