2988549561 has 16 divisors (see below), whose sum is σ = 4223366784. Its totient is φ = 1873284864.

The previous prime is 2988549547. The next prime is 2988549583. The reversal of 2988549561 is 1659458892.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-2988549561 is a prime.

It is a super-4 number, since 4×2988549561⁴ (a number of 39 digits) contains 4444 as substring.

It is not an unprimeable number, because it can be changed into a prime (2988549511) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22740 + ... + 80586.

It is an arithmetic number, because the mean of its divisors is an integer number (263960424).

Almost surely, 2^2988549561 is an apocalyptic number.

It is an amenable number.

2988549561 is a deficient number, since it is larger than the sum of its proper divisors (1234817223).

2988549561 is a wasteful number, since it uses less digits than its factorization.

2988549561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58880.

The product of its digits is 6220800, while the sum is 57.

The square root of 2988549561 is about 54667.6280901230. The cubic root of 2988549561 is about 1440.4122985103.

The spelling of 2988549561 in words is "two billion, nine hundred eighty-eight million, five hundred forty-nine thousand, five hundred sixty-one".