1802662668 has 24 divisors (see below), whose sum is σ = 4673570160. Its totient is φ = 600887520.

The previous prime is 1802662663. The next prime is 1802662709. The reversal of 1802662668 is 8662662081.

1802662668 is a `hidden beast` number, since 18 + 0 + 2 + 6 + 626 + 6 + 8 = 666.

It is not an unprimeable number, because it can be changed into a prime (1802662663) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8345553 + ... + 8345768.

It is an arithmetic number, because the mean of its divisors is an integer number (194732090).

Almost surely, 2^1802662668 is an apocalyptic number.

1802662668 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1802662668 is an abundant number, since it is smaller than the sum of its proper divisors (2870907492).

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

1802662668 is a wasteful number, since it uses less digits than its factorization.

1802662668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16691334 (or 16691326 counting only the distinct ones).

The product of its (nonzero) digits is 331776, while the sum is 45.

The square root of 1802662668 is about 42457.7751183455. The cubic root of 1802662668 is about 1217.0399141405.

The spelling of 1802662668 in words is "one billion, eight hundred two million, six hundred sixty-two thousand, six hundred sixty-eight".