561496018 has 8 divisors (see below), whose sum is σ = 886572720. Its totient is φ = 265971780.

The previous prime is 561495997. The next prime is 561496027. The reversal of 561496018 is 810694165.

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

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 7388068 + ... + 7388143.

It is an arithmetic number, because the mean of its divisors is an integer number (110821590).

Almost surely, 2^561496018 is an apocalyptic number.

561496018 is a deficient number, since it is larger than the sum of its proper divisors (325076702).

561496018 is a wasteful number, since it uses less digits than its factorization.

561496018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14776232.

The product of its (nonzero) digits is 51840, while the sum is 40.

The square root of 561496018 is about 23695.9071993456. The cubic root of 561496018 is about 824.9903974395.

The spelling of 561496018 in words is "five hundred sixty-one million, four hundred ninety-six thousand, eighteen".