2642061549 has 16 divisors (see below), whose sum is σ = 3744166400. Its totient is φ = 1652466096.

The previous prime is 2642061503. The next prime is 2642061571. The reversal of 2642061549 is 9451602462.

It is a happy number.

It is not a de Polignac number, because 2642061549 - 2⁸ = 2642061293 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 (2642061349) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 219139 + ... + 230880.

It is an arithmetic number, because the mean of its divisors is an integer number (234010400).

Almost surely, 2^2642061549 is an apocalyptic number.

It is an amenable number.

2642061549 is a deficient number, since it is larger than the sum of its proper divisors (1102104851).

2642061549 is a wasteful number, since it uses less digits than its factorization.

2642061549 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 450144.

The product of its (nonzero) digits is 103680, while the sum is 39.

The square root of 2642061549 is about 51400.9878212472. The cubic root of 2642061549 is about 1382.4443043223. Note that the first 3 decimals are identical.

The spelling of 2642061549 in words is "two billion, six hundred forty-two million, sixty-one thousand, five hundred forty-nine".