1668902356 has 48 divisors (see below), whose sum is σ = 3341721600. Its totient is φ = 721876320.

The previous prime is 1668902321. The next prime is 1668902371. The reversal of 1668902356 is 6532098661.

It is a Harshad number since it is a multiple of its sum of digits (46).

It is a congruent 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, 197245 + ... + 205531.

It is an arithmetic number, because the mean of its divisors is an integer number (69619200).

Almost surely, 2^1668902356 is an apocalyptic number.

It is an amenable number.

1668902356 is an abundant number, since it is smaller than the sum of its proper divisors (1672819244).

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

1668902356 is a wasteful number, since it uses less digits than its factorization.

1668902356 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8524 (or 8522 counting only the distinct ones).

The product of its (nonzero) digits is 466560, while the sum is 46.

The square root of 1668902356 is about 40852.2013605142. The cubic root of 1668902356 is about 1186.1610051886.

The spelling of 1668902356 in words is "one billion, six hundred sixty-eight million, nine hundred two thousand, three hundred fifty-six".