2993781655 has 4 divisors (see below), whose sum is σ = 3592537992. Its totient is φ = 2395025320.

The previous prime is 2993781649. The next prime is 2993781689. The reversal of 2993781655 is 5561873992.

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

It is not a de Polignac number, because 2993781655 - 2²⁵ = 2960227223 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2993781596 and 2993781605.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 299378161 + ... + 299378170.

It is an arithmetic number, because the mean of its divisors is an integer number (898134498).

Almost surely, 2^2993781655 is an apocalyptic number.

2993781655 is a deficient number, since it is larger than the sum of its proper divisors (598756337).

2993781655 is an equidigital number, since it uses as much as digits as its factorization.

2993781655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 598756336.

The product of its digits is 4082400, while the sum is 55.

The square root of 2993781655 is about 54715.4608406070. The cubic root of 2993781655 is about 1441.2523915224.

The spelling of 2993781655 in words is "two billion, nine hundred ninety-three million, seven hundred eighty-one thousand, six hundred fifty-five".