2039554561 has 8 divisors (see below), whose sum is σ = 2227587264. Its totient is φ = 1851958320.

The previous prime is 2039554547. The next prime is 2039554567. The reversal of 2039554561 is 1654559302.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2039554561 - 2¹⁵ = 2039521793 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2039554567) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 99301 + ... + 118066.

It is an arithmetic number, because the mean of its divisors is an integer number (278448408).

Almost surely, 2^2039554561 is an apocalyptic number.

It is an amenable number.

2039554561 is a deficient number, since it is larger than the sum of its proper divisors (188032703).

2039554561 is a wasteful number, since it uses less digits than its factorization.

2039554561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 218231.

The product of its (nonzero) digits is 162000, while the sum is 40.

The square root of 2039554561 is about 45161.4278007239. The cubic root of 2039554561 is about 1268.1728247568.

The spelling of 2039554561 in words is "two billion, thirty-nine million, five hundred fifty-four thousand, five hundred sixty-one".