1663743066 has 32 divisors (see below), whose sum is σ = 3368563200. Its totient is φ = 547777200.

The previous prime is 1663743047. The next prime is 1663743077. The reversal of 1663743066 is 6603473661.

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, 157045 + ... + 167303.

It is an arithmetic number, because the mean of its divisors is an integer number (105267600).

Almost surely, 2^1663743066 is an apocalyptic number.

1663743066 is an abundant number, since it is smaller than the sum of its proper divisors (1704820134).

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

1663743066 is a wasteful number, since it uses less digits than its factorization.

1663743066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10594.

The product of its (nonzero) digits is 326592, while the sum is 42.

The square root of 1663743066 is about 40789.0066807222. The cubic root of 1663743066 is about 1184.9374333610.

The spelling of 1663743066 in words is "one billion, six hundred sixty-three million, seven hundred forty-three thousand, sixty-six".