2489777783 has 4 divisors (see below), whose sum is σ = 2504686800. Its totient is φ = 2474868768.

The previous prime is 2489777743. The next prime is 2489777813. The reversal of 2489777783 is 3877779842.

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 2489777783 - 2²⁰ = 2488729207 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 (2489777713) 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, 7454258 + ... + 7454591.

It is an arithmetic number, because the mean of its divisors is an integer number (626171700).

Almost surely, 2^2489777783 is an apocalyptic number.

2489777783 is a deficient number, since it is larger than the sum of its proper divisors (14909017).

2489777783 is a wasteful number, since it uses less digits than its factorization.

2489777783 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14909016.

The product of its digits is 33191424, while the sum is 62.

The square root of 2489777783 is about 49897.6731221006. The cubic root of 2489777783 is about 1355.3564569200.

The spelling of 2489777783 in words is "two billion, four hundred eighty-nine million, seven hundred seventy-seven thousand, seven hundred eighty-three".