1662682638 has 16 divisors (see below), whose sum is σ = 3325764816. Its totient is φ = 554160960.

The previous prime is 1662682633. The next prime is 1662682639. The reversal of 1662682638 is 8362862661.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1662682631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 90948 + ... + 107688.

It is an arithmetic number, because the mean of its divisors is an integer number (207860301).

Almost surely, 2^1662682638 is an apocalyptic number.

1662682638 is an abundant number, since it is smaller than the sum of its proper divisors (1663082178).

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

1662682638 is a wasteful number, since it uses less digits than its factorization.

1662682638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33299.

The product of its digits is 995328, while the sum is 48.

The square root of 1662682638 is about 40776.0056650967. The cubic root of 1662682638 is about 1184.6856300797.

The spelling of 1662682638 in words is "one billion, six hundred sixty-two million, six hundred eighty-two thousand, six hundred thirty-eight".