1668502036 has 12 divisors (see below), whose sum is σ = 2920749300. Its totient is φ = 834002240.

The previous prime is 1668502027. The next prime is 1668502079. The reversal of 1668502036 is 6302058661.

It can be written as a sum of positive squares in 2 ways, for example, as 726625936 + 941876100 = 26956^2 + 30690^2 .

It is a super-2 number, since 2×1668502036² = 5567798088272290592, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1668501986 and 1668502004.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 46675 + ... + 74266.

It is an arithmetic number, because the mean of its divisors is an integer number (243395775).

Almost surely, 2^1668502036 is an apocalyptic number.

It is an amenable number.

1668502036 is a deficient number, since it is larger than the sum of its proper divisors (1252247264).

1668502036 is a wasteful number, since it uses less digits than its factorization.

1668502036 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124394 (or 124392 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 37.

The square root of 1668502036 is about 40847.3014530948. The cubic root of 1668502036 is about 1186.0661560315.

The spelling of 1668502036 in words is "one billion, six hundred sixty-eight million, five hundred two thousand, thirty-six".