2489955191 has 8 divisors (see below), whose sum is σ = 2501550000. Its totient is φ = 2478378240.

The previous prime is 2489955179. The next prime is 2489955197. The reversal of 2489955191 is 1915599842.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 2489955191 - 2¹⁸ = 2489693047 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2489955197) 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, 332276 + ... + 339686.

It is an arithmetic number, because the mean of its divisors is an integer number (312693750).

Almost surely, 2^2489955191 is an apocalyptic number.

2489955191 is a deficient number, since it is larger than the sum of its proper divisors (11594809).

2489955191 is a wasteful number, since it uses less digits than its factorization.

2489955191 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8929.

The product of its digits is 1166400, while the sum is 53.

The square root of 2489955191 is about 49899.4508086011. The cubic root of 2489955191 is about 1355.3886479277.

The spelling of 2489955191 in words is "two billion, four hundred eighty-nine million, nine hundred fifty-five thousand, one hundred ninety-one".