2642877649 has 4 divisors (see below), whose sum is σ = 2644503664. Its totient is φ = 2641251636.

The previous prime is 2642877631. The next prime is 2642877673. The reversal of 2642877649 is 9467782462.

2642877649 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, 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 2642877649 - 2¹⁹ = 2642353361 is a prime.

It is a super-3 number, since 3×2642877649³ (a number of 29 digits) contains 333 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2642877649.

It is not an unprimeable number, because it can be changed into a prime (2642877449) 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, 810567 + ... + 813820.

It is an arithmetic number, because the mean of its divisors is an integer number (661125916).

Almost surely, 2^2642877649 is an apocalyptic number.

It is an amenable number.

2642877649 is a deficient number, since it is larger than the sum of its proper divisors (1626015).

2642877649 is a wasteful number, since it uses less digits than its factorization.

2642877649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1626014.

The product of its digits is 8128512, while the sum is 55.

The square root of 2642877649 is about 51408.9257716984. The cubic root of 2642877649 is about 1382.5866296281.

The spelling of 2642877649 in words is "two billion, six hundred forty-two million, eight hundred seventy-seven thousand, six hundred forty-nine".