2489791819 has 4 divisors (see below), whose sum is σ = 2498289696. Its totient is φ = 2481293944.

The previous prime is 2489791813. The next prime is 2489791847. The reversal of 2489791819 is 9181979842.

2489791819 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 2489791819 - 2¹⁹ = 2489267531 is a prime.

It is a super-2 number, since 2×2489791819² = 12398126603918657522, which contains 22 as substring.

It is a Smith number, since the sum of its digits (58) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2489791813) 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, 4248499 + ... + 4249084.

It is an arithmetic number, because the mean of its divisors is an integer number (624572424).

Almost surely, 2^2489791819 is an apocalyptic number.

2489791819 is a deficient number, since it is larger than the sum of its proper divisors (8497877).

2489791819 is an equidigital number, since it uses as much as digits as its factorization.

2489791819 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8497876.

The product of its digits is 2612736, while the sum is 58.

The square root of 2489791819 is about 49897.8137697435. The cubic root of 2489791819 is about 1355.3590038337.

The spelling of 2489791819 in words is "two billion, four hundred eighty-nine million, seven hundred ninety-one thousand, eight hundred nineteen".