1668268902 has 32 divisors (see below), whose sum is σ = 3360614400. Its totient is φ = 552087648.

The previous prime is 1668268897. The next prime is 1668268907. The reversal of 1668268902 is 2098628661.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1668268897) and next prime (1668268907).

It is a super-2 number, since 2×1668268902² = 5566242258760571208, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1668268907) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1166724 + ... + 1168152.

It is an arithmetic number, because the mean of its divisors is an integer number (105019200).

Almost surely, 2^1668268902 is an apocalyptic number.

1668268902 is an abundant number, since it is smaller than the sum of its proper divisors (1692345498).

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

1668268902 is a wasteful number, since it uses less digits than its factorization.

1668268902 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2700.

The product of its (nonzero) digits is 497664, while the sum is 48.

The square root of 1668268902 is about 40844.4476275540. The cubic root of 1668268902 is about 1186.0109118222.

The spelling of 1668268902 in words is "one billion, six hundred sixty-eight million, two hundred sixty-eight thousand, nine hundred two".