1661063226 has 32 divisors (see below), whose sum is σ = 3405127680. Its totient is φ = 540002736.

The previous prime is 1661063219. The next prime is 1661063231. The reversal of 1661063226 is 6223601661.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26485 + ... + 63431.

It is an arithmetic number, because the mean of its divisors is an integer number (106410240).

Almost surely, 2^1661063226 is an apocalyptic number.

1661063226 is an abundant number, since it is smaller than the sum of its proper divisors (1744064454).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1661063226 is a wasteful number, since it uses less digits than its factorization.

1661063226 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37138.

The product of its (nonzero) digits is 15552, while the sum is 33.

The square root of 1661063226 is about 40756.1434142143. The cubic root of 1661063226 is about 1184.3008869194.

Adding to 1661063226 its reverse (6223601661), we get a palindrome (7884664887).

The spelling of 1661063226 in words is "one billion, six hundred sixty-one million, sixty-three thousand, two hundred twenty-six".