1201663318 has 4 divisors (see below), whose sum is σ = 1802494980. Its totient is φ = 600831658.

The previous prime is 1201663297. The next prime is 1201663327. The reversal of 1201663318 is 8133661021.

It is a semiprime because it is the product of two primes.

It is a self number, because there is not a number n which added to its sum of digits gives 1201663318.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 300415828 + ... + 300415831.

It is an arithmetic number, because the mean of its divisors is an integer number (450623745).

Almost surely, 2^1201663318 is an apocalyptic number.

1201663318 is a deficient number, since it is larger than the sum of its proper divisors (600831662).

1201663318 is an equidigital number, since it uses as much as digits as its factorization.

1201663318 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 600831661.

The product of its (nonzero) digits is 5184, while the sum is 31.

The square root of 1201663318 is about 34665.0157651774. The cubic root of 1201663318 is about 1063.1493255974.

The spelling of 1201663318 in words is "one billion, two hundred one million, six hundred sixty-three thousand, three hundred eighteen".