2790171649 has 4 divisors (see below), whose sum is σ = 2799260464. Its totient is φ = 2781082836.

The previous prime is 2790171623. The next prime is 2790171673. The reversal of 2790171649 is 9461710972.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2790171649 - 2¹⁹ = 2789647361 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2790171599 and 2790171608.

It is not an unprimeable number, because it can be changed into a prime (2790171689) 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, 4543947 + ... + 4544560.

It is an arithmetic number, because the mean of its divisors is an integer number (699815116).

Almost surely, 2^2790171649 is an apocalyptic number.

It is an amenable number.

2790171649 is a deficient number, since it is larger than the sum of its proper divisors (9088815).

2790171649 is an equidigital number, since it uses as much as digits as its factorization.

2790171649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9088814.

The product of its (nonzero) digits is 190512, while the sum is 46.

The square root of 2790171649 is about 52822.0753946681. The cubic root of 2790171649 is about 1407.8086862955.

The spelling of 2790171649 in words is "two billion, seven hundred ninety million, one hundred seventy-one thousand, six hundred forty-nine".