1866663364 has 12 divisors (see below), whose sum is σ = 3297191184. Its totient is φ = 924608744.

The previous prime is 1866663353. The next prime is 1866663367. The reversal of 1866663364 is 4633666681.

It is a super-2 number, since 2×1866663364² = 6968864228999592992, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1866663367) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2180254 + ... + 2181109.

It is an arithmetic number, because the mean of its divisors is an integer number (274765932).

Almost surely, 2^1866663364 is an apocalyptic number.

It is an amenable number.

1866663364 is a deficient number, since it is larger than the sum of its proper divisors (1430527820).

1866663364 is a wasteful number, since it uses less digits than its factorization.

1866663364 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4361474 (or 4361472 counting only the distinct ones).

The product of its digits is 2239488, while the sum is 49.

The square root of 1866663364 is about 43204.8997684290. The cubic root of 1866663364 is about 1231.2757741382.

The spelling of 1866663364 in words is "one billion, eight hundred sixty-six million, six hundred sixty-three thousand, three hundred sixty-four".