1668885370 has 16 divisors (see below), whose sum is σ = 3085183368. Its totient is φ = 649512000.

The previous prime is 1668885367. The next prime is 1668885419. The reversal of 1668885370 is 735888661.

It can be written as a sum of positive squares in 4 ways, for example, as 1542839841 + 126045529 = 39279^2 + 11227^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2254881 + ... + 2255620.

Almost surely, 2^1668885370 is an apocalyptic number.

1668885370 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1668885370 is a deficient number, since it is larger than the sum of its proper divisors (1416297998).

1668885370 is a wasteful number, since it uses less digits than its factorization.

1668885370 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4510545.

The product of its (nonzero) digits is 1935360, while the sum is 52.

The square root of 1668885370 is about 40851.9934642118. The cubic root of 1668885370 is about 1186.1569809470.

The spelling of 1668885370 in words is "one billion, six hundred sixty-eight million, eight hundred eighty-five thousand, three hundred seventy".